Aston Villa defender Gary Cahill has joined Championship side Sheffield United on a three-month loan deal. The 21-year-old England Under-21 international has been restricted to just two appearances for Martin O'Neill's men so far this term and will move to Bramall Lane in a bid to play first-team football. 'I'm perfectly happy at Villa, I just need games,' he told the club's official website. 'My career's going fine but I felt what was important was keeping it going by playing games. 'The most important thing for me was playing for a big club that's doing well.' Cahill will join ex-Villa midfielder Lee Hendrie at the Blades and says the midfielder helped him opt to join Bryan Robson's side. 'He said the manager and players are great and the manager gives good advice and that helped me make my decision,' he added. 'I respect the gaffer for letting me go out on loan, even if it's for four or five weeks because it's better than not playing at Villa.'