Not playing at his position is complicated in the long term, Wenger told beIN SPORTS.
At the start, the guy accepts it but, if he does not meet his needs in the long term and he feels that the position does not allow him to express his qualities, he will become discouraged.
Today, he is a player who must play in the centre because he has a great work rate, a precision in his passes.
He can be dangerous with the last pass and by scoring goals, but there is congestion because he is in the range of play of Messi.
In his first season with Barca last time out, Griezmann scored nine goals, supplied four assists and created 33 chances in 35 LaLiga appearances.
Griezmann finished 2019-20 with 15 goals in all competitions – a tumultuous campaign which saw Barca dethroned by bitter rivals Real Madrid and humiliated 8-2 by Bayern Munich in the Champions League quarter-finals.
The 29-year-old scored 133 goals in 257 games for Atletico between 2014 and 2019.