Need advice

[NUNO FC]

I've got a player with positions AMR AML and AMC and clearly he played worse at AMC and better at AML, but as i keep changing tactics some useless players sometimes get useful

[EastsiderSG]

I've got a player with positions AMR AML and AMC and clearly he played worse at AMC and better at AML, but as i keep changing tactics some useless players sometimes get useful

Problem is i have alot of single role players and i do not need him anywhere but at amc. started 22 games and scored only 9 goals while my next worse started 21 scored 17 so its a big gap. His assists are also the worse among my all my attackers. would you keep him? my fastest trainer and young