City's Caballero backs himself to fill Hart's boots

Football Soccer- Juventus v Manchester City - UEFA Champions League Group Stage - Group D - Juventus stadium, Turin, Italy - 25/11/15 Manchester City's goalkeeper Joe Hart (R) is replaced by Willy Caballero. Reuters/Giorgio Perottino

(Reuters) - Manchester City's backup keeper Willy Caballero is confident he can fill in for Joe Hart if the knock the England No.1 picked up against Juventus in midweek rules him out of Saturday's Premier League clash with Southampton.

Hart strained a hamstring against the Italian champions on Wednesday night, making way for Caballero in the 81st minute, and is a doubt for the visit of eighth-placed Southampton.