#1 Antoine Griezmann

Griezmann is a player whose future has been unresolved in the Spanish capital for quite some time now.
The forward has been in impressive form this season and vastly been linked to Barcelona lately. He has netted 25 goals and provided 13 assists this season so far.
However the concern primarily being his role in Barcelona's already star-studded team. An attempt is all that can be made to resolve the problem for now.
The Frenchman in no way is a number #9, nor is he a number #10 like Messi. The best suited position for him is the second striker.
If Barcelona sign him, he could either be a direct replacement to Ousmane Dembele in the first eleven or a backup to Lionel Messi. To be fair, he can provide the much needed spark to the team even in the Argentine's absence.
This is a headache Ernesto Valverde should be keen to take in the best of his interests.