Tottenham boss Mauricio Pochettino is eager for his young players to step up their intensity.
Such is the strength now in the Spurs squad, rising star Marcus Edwards has gone to Norwich on loan, while winger Georges-Kevin N'Koudou has joined Burnley temporarily.
Pochettino insists he has raised the bar for young talent, saying: “Now, it is not only about quality. It is not only about showing something good.
“You need to show quality, mental strength, physical condition and everything, if you want to play in the first team.
“It is moving on, getting better, and now the demands are higher than before."