Chelsea will sell centre-backs - Alonso

[Getty Images] Manager Xabi Alonso says Chelsea are looking to reduce their central defensive options from 10 to "four or five". The Blues signed Maxence Lacroix from Crystal Palace for £52m on Thursday, but Alonso also has Wesley Fofana, Levi Colwill, Tosin Adarabioyo, Josh Acheampong and Aaron Anselmino in his squad on the club's pre-season tour of Australia. Mamadou Sarr is also at the club but is expected to leave on loan, while Trevoh Chalobah, Benoit Badiashile and Axel Disasi are available for sale having been valued at £35m, £30m and £25m respectively. Chalobah is not yet back after England World Cup duty and the other two are training away from the first-team group. Alonso revealed his preferred number of centre-backs, saying: "Four or five. Is that accurate enough?" Speaking about Lacroix, he added: "He has a strong personality. He's mature, he wants to win and he has a winner's mentality. As well, he loves to defend and that's something I like too." Alonso said the 6ft 4in France international will bring "power" to his defence. Chelsea's success in securing targets early for Alonso, including £117m attacker Morgan Rogers and £47m full-back Marco Palestra, has not removed the need to trim the squad. The club are also closing in on moves for Brighton striker Danny Welbeck, 35, and 36-year-old midfielder Jordan Henderson, who has cancelled his contract at Brentford . However, failure to qualify for Europe limits opportunities for fringe players following last season's 10th-place Premier League finish. Nicolas Jackson and Moises Caicedo have joined Chelsea's squad in Sydney before Saturday's friendly against Tottenham , while Romeo Lavia is fit again after being held back from Tuesday's high-scoring win over Western Sydney Wanderers .