Willy Caballero, who joined from Manchester City in 2017, started the season as back-up to Kepa Arrizabalaga.
Willy Caballero saved penalties from Lucas Leiva, Philippe Coutinho and substitute Adam Lallana and although Fernandinho hit the post with his spot-kick, Yaya Toure stroked home the decisive penalty to give Manchester City victory over Liverpool in the League Cup.
Willy Caballero has moved for an undisclosed fee in a switch that sees him team up again with Manchester City manger Manuel Pellegrini.