Harry Redknapp has urged Chelsea to make sure they don’t sell one key player during the summer transfer window. The window officially opened for Premier League clubs on Friday (today), so let’s see if it’s another busy time at Stamford Bridge. READ MORE: Chelsea confirmed signings, transfers in and out, loans and releases for the 2024 summer transfer windowDespite an up and down season last year at Chelsea under Mauricio Pochettino, several players still proved their quality and importance to the squad. Let’s see how the group takes shape under new head coach Enzo Maresca, though. Harry Redkna…