To keep him means to build a team around him and continue to allow him this free role, he's not good enough for this, we can't justify it, maybe in a different league but the Premier League requires more versatility and physicality. It's pointless keeping him in a lesser role as a squad player like McTominay, there's no middle ground for him. Time for a change, yes there's worse players at the club but constantly reshuffling the players on the peripheries isn't enough, either be brave or accept mediocrity.