Chelsea manager, Mauricio Pochettino, has confirmed he had made a “tough” decision on the goalkeeper who will start tomorrow’s Premier League game against Brentford. Robert Sanchez made his comeback from injury as the Blues saw off Leeds in the FA Cup fifth round on Wednesday night. Sanchez had started the season as Pochettino’s new No.1 following the departure of Kepa Arrizabalaga. He, however, failed to convince and the injury he suffered during a defeat at Everton in December handed Petrovic a chance to shine. Petrovic has seized his chance and has been one of his side’s best players over t…