Fekir has finally recaptured his form with La Liga outfit Betis after struggling with injuries in recent seasons.
Having come close to joining Liverpool in 2018, the 27-year-old is once again attracting Europe's biggest clubs.
George, who spent four years with Betis, rates Fekir as a talent and believes he can reach the top if he has the right mindset.
"Nabil is young and he is a good player," George told TribalFootball.com in an exclusive interview.
"If he keeps working hard, keeps his cool and is disciplined, I think he might play for top clubs in Europe.
"He has to continue to do his best for his club and hopefully the bigger clubs will come one day knocking at the door."
Fekir against Atletico Madrid in April
For his part, Fekir is focused on his performances with Betis.
Asked about the rumours regarding his future, Fekir told AS: "For now I am happy at Betis.
"We are going to do everything possible to go to Europe. It's what I think about now.
"In football we can never know the future. We must look at season after season.
"It is always important to play in Europe. I was playing the Champions League and Europa League and I want to play there again."