Ronald Koeman ( head coach ) wanted replacements for the experienced players who left .
Louis van Gaal ( director of football ) wanted to focus on the inflow of own youth players which head coach deemed more profitable in the long run .
Ronald Koeman ( head coach ) wanted replacements for the experienced players who left but Louis van Gaal ( director of football ) wanted to focus on the inflow of own youth players which he deemed more profitable in the long run .