Adam is no deep lying CM. He has never played in that position. He played an almost free role in midfield at Blackpool, and when he played in a midfield two for us, he showed poor positional awareness, relying heavily on Lucas for defensive cover, and his season went to hell when Lucas got injured. A deep lying CM needs to be able to dictate a game and be able to read a game well, knowing when to force play and when to keep possession. Adam showed none of that in-game intelligence, and was a defensive liability who was often too slow in getting rid of the ball as well. I think he's a good option when we're chasing a game, or having trouble break a team down, because he's so direct, but he is definitely, unequivocally unsuited to a deep role.
We need one of those midfield generals desperately I think. More than a goal scorer I would argue.