Football Extra newsletter: The Spurs go marching in

Having finally flexed their financial might in the transfer window, Roberto de Zerbi's Tottenham feel strongly positioned to reclaim their spot in the top six [Getty Images] Guessing the Premier League winners is a tough call this season with Liverpool, Manchester City, Chelsea, Manchester United and Tottenham Hotspur all having new or relatively new first team coaches. If you're outside the UK and would like to receive the Football Extra newsletter, head this way to sign up . I'm increasingly impressed by Spurs as the days go by in this transfer window, hence their inclusion in that elite list. Their acquisitions policy looks to have improved markedly. I wasn't sure that almost £100million for Sandro Tonali, clearly an exceptional player, was a great deal at that figure. But with £85million Mateus Fernandes alongside him however, it makes much more sense, even before you consider the industry Conor Gallagher will provide. That midfield engine room suddenly looks much better staffed. Archie Gray and Lucas Bergvall are no longer teenagers and are likely to grow in stature this season. There are also a number of important players coming back from injury too, particularly James Maddison. With the appointment of Roberto de Zerbi also a mature decision by the board, Spurs could well be the team that improves most this season, though that isn't such a big call after the stinker they had last time round. A nicer pace to life Jurgen Klopp is the latest big name manager to leave club football behind, as he became Germany's new boss last week [Getty Images] There is also a change in the air for some of the world's blue riband managers. Jurgen Klopp has chosen to go with the German national side, Pep Guardiola briefly considered Italy, Thomas Tuchel is happy with England, Carlo Ancelotti hangs on at Brazil and Zinedine Zidane looks nailed on to be the next France manager. Why are these top coaches gravitating away from the domestic game? It could be an age thing. The constant stress levels in domestic football can be overwhelming week after week. This is a life it best suited for a younger individual with energy to spare. It could be that it is just the right time for the next generation to become the top managerial stars. It is also possible that it is all about the style of management changing; you have to be more collegiate now. The days of an all-powerful head coach controlling a club's entire football structure are gone. Most importantly, the choosing and buying of players is not solely, or sometimes not at all, in the head coach's gift. This could be why there is such a significant turnover right now. The role has changed away from the old controlling style – just don't tell that to Jose Mourinho at Real Madrid! No rest for the wicked Scotland defender Grant Hanley was back in action for his club Hibernian last week – barely three weeks after returning from the World Cup [Getty Images] Too many players will not get enough rest in the wake of the expanded World Cup. Add last summer's Club World Cup, which dug deep into many summer breaks as well, and you begin to understand why injuries are a real fear. I mention this because on Thursday, Hibernian, the Scottish team I support, lost 2-0 in the first leg of their UEFA Conference League qualifier against KF Malisheva of Kosovo. A bitter pill but how must our 34-year-old centre back Grant Hanley have felt performing in front of 2873 souls after his previous outing four weeks ago in front of 64,000 in Boston. You can add in a TV audience in the tens of millions too. But Scotland weren't officially out and allowed home until June 29. So Grant had just over three weeks to get home, go on holiday, get enough rest and recovery, then do a pre-season before starting this vital European club game. It is madness that the game allows this to happen. As competitions grow exponentially, seeking ever-increasing profits, there are ever-decreasing considerations for the players' welfare. I love it when a plan comes together No Rodri, no Bernardo Silva, no problem after Manchester City swooped early in the summer for Elliot Anderson [Getty Images] Like everyone else I am transfixed by the transfers happening every day in the Premier League. There is always the temptation to make a snap judgement of what has happened in the market so far but this is unfair. There is so much business still to be done and so many difficulties to overcome. Clubs often have to be sure that money is coming in from sales before they can spend on new players. Chelsea must be particularly anxious in this area as they have spent early and big. But you are in a race against time to get the player you want before someone else nabs him and it's tempting to take a chance, hoping you make sales at the prices you envisage afterwards. The financial rules now in place make this an incredibly hard circle to square. The league seems to think all clubs throw money about recklessly. Arguably some do but if you leave it too late you look amateurish. Then you're rushed into panic buys at the end of the window, and rarely you get great value in that scenario. Newcastle United were a prime example last season. They waited as the Alexander Isak saga played out and in the end his replacements weren't their first choices. Limited integration time for the new stars made it a very difficult season. The gold standard come is those who know what they want and move early because they have had a plan in place all along. It helps to have a lot of money and a brand name that attracts the top players. Manchester City come to mind right away. With Rodri injured and Bernardo Silva gone, the move for Elliot Anderson, even at £115million, seems obvious and sensible in hindsight. Even without Pep Guardiola they are still title favourites alongside Arsenal because of that methodology. But the Gunners have moved sensibly over the summer so far. Piero Hincapie was a no brainer, particularly as William Saliba is injured, but I'd expect one more cover player in that position. What I didn't expect was a story suggesting that Vinicius Junior might be tempted to north London. I hate being "played" in these circumstances. Is Vini Jr, his agent or indeed Real Madrid just using Arsenal as a bargaining chip in contract talks? This would be classic manipulative behaviour but if the chips are cashed in, it'd be an incredible win for Mikel Arteta. The Brazilian's wages feel wrong for the Arsenal but his addition would make that last step to becoming European champions far more likely. You have to feel a little sorry for Christos Tzolis, just signed from Brugge for £34million, who might find that left flank suddenly a little crowded. If Arsenal's use of physicality at corners is curtailed with changes to the rules, they'll need to find goals from another avenue. Maybe that is why Mikel Arteta feels the need to add more to an already impressively front line.