Eric Dier insists Dele Alli can still rescue his career at Tottenham.
Alli's future at the club looks increasingly uncertain following interest from Paris Saint-Germain over the summer.
Asked if his friend and team-mate could turn it around at Spurs, Dier said: "Yeah, of course. Dele has the capacity, we all know his quality, we all know what he brings, he's shown that in the past.
"It's really up to him to put in the work, the effort, the commitment and I'm sure he will do that.
"That's who he is, he's always had that drive. It's up to him, it's in his hands and it's in all of our hands.
"Individually, we all have to perform, we've got a very big squad and we all have to perform at the highest level if we want to play."