The capture of Lemar has been a priority for Atlético, who have been making moves in the market to attract world class players to the club, not least to persuade Antoine Griezmann to extend his stay in Madrid.
The 27-year-old is linked with a move to LaLiga champions Barcelona, but he may yet remain at Atletico.
"I'm in agreement that to get back to winning the Champions League we have to have the best players".
Barcelona are reportedly ready to trigger Griezmann's €100million release clause.
They claim that Griezmann has made a decision to join Barcelona.More news: Tyson Fury wins his comeback fight against Sefer Seferi
"If the club sign him, brilliant".
Atletico Madrid and Monaco have reached a "preliminary agreement" over the transfer of Thomas Lemar, the Spanish club have announced. "I know many people were waiting for that but this isn't the right day to do so".
"Cristiano Ronaldo leaving, out of 10, I'm anxious about a five or a four", he said.
Lemar was included in Didier Deschamps' final 23-man squad for the World Cup this summer, and could be in line to start on the left wing, depending on which formation the coach opts to use. And he is very good, " Messi was quoted by Goal to have told Sport.
Griezmann has scored 112 goals and assisted a further 40 strikes in 209 games for Atletico since his arrival at the Vicente Calderon in 2014.