#1 Antoine Griezmann
Griezmann's transfer has been speculated since the last summer transfer window. The Frenchman was bound to join the Manchester United, however the transfer didn't happen as Mourinho opted for Lukaku instead.
The man famous for his 'Hotline Bling' celebration had made 23 appearances this year and netted 10 goals in the process. His numbers may not seem insane because the entire Atletico Madrid team is not performing as per their standards. There must be no doubt regarding the goal-scoring and positioning ability of this forward. Be it for the club or for his nation, he has delivered whenever his team needed a goal.
Barcelona must give it all they've got and try to secure the services of Antoine Griezmann as Luis Suarez has been in poor form this season. Ernesto Valverde needs a quality striker other than Luis Suarez because Paco Alcacer is not yet ready for high pressure matches. Taking into consideration, Griezmann can also play as a withdrawn forward or attacking midfielder he will be highly valuable for Barcelona.
Griezmann taking the responsibility of the attacking midfield will mean Messi can operate from his favourite right wing positon, where the little man from Argentina is the deadliest. Griezmann is ready for a move away from the Los Rojiblancos and Barcelona needs to be quick and capitalise on the situation because many others clubs including Manchester United and Real Madrid are trying to have his signature.