For Sunday's 1-1 draw with Newcastle United, Mourinho defended his decision to leave Alli out of the matchday squad by explaining the 24-year-old will get minutes.
The Spurs boss said: “There are others waiting for the same minutes.
“It is an internal fight, fight between friends. Everyone will get chances to play.
And when asked whether Alli will still be a Tottenham player beyond the transfer window Mourinho responded: “I believe so."