it's just that we don't like to take risk, if u can remember the first game Messi played in he was unknown and Barca were winning be 3 goal margin, then in the last 15 min he came in and he had two shoots on goal one was an offside and one was a goal. that's what we need we need to introduce a young player in some games that we are comfortably winning he will have a 50-50 % of shinning. and i think Didi well have the chance to do so.