For clean sheets to be credited in season, tournament, Be A Pro Season, and manager modes (everything outside exhibitions), it would be the last keeper present at the end of a shutout (clean sheet) game. For example, if you start with Edwin Van der Sar in the first half, Thomasz Kusczak in the start of second half, but finish with Wayne Rooney in goal because Kusczak was red-carded, and the final score was 2-0, Rooney will be credited with the clean sheet, and not Edwin Vander Sar. Kusczak is ineligible because he was red-carded. The clean sheet is void if any goals are scored against them. If any keeper conceded a goal, any substitute keepers in goal will not benefit even if they didn't concede any more goals.