I have no worries about his effort and willingness to defend - even in the number 9 role he's often our best defender or at least makes plenty of tackles & interceptions. As a number 10 in a 4-2-3-1 then I have no problem with Firmino but if we're going to play a 4-3-3 for the most part, which I think we will, then I'm not sure about Firmino in midfield. Coutinho's proven he can play in midfield in a 4-3-3 during the 13/14 season.
The obvious other problem with Firmino in midfield is he's your first choice centre forward too. Yes Sturridge is a great alternative but how sure can we be that he'll be fit when he's needed.
The obvious other problem with Firmino in midfield is he's your first choice centre forward too. Yes Sturridge is a great alternative but how sure can we be that he'll be fit when he's needed.