The Arsenal legend thinks Mourinho shouldn't criticize his players on social media.
Keown referred to a Instagram post by the former Chelsea and Manchester United bosses following Tottenham's loss to Royal Antwerp in the Belgian Europa League last month.
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Alli has been battling for game time so far this season and has not been included in Spurs' Premier League matchday squads.
“I don't like where he [Mourinho] took photos of himself and says: 'Look at me, I'm angry. I hope the players are upset too. "I don't think it's necessary. Why make it public?
" Dele Alli, I think, could be a little more respectful. That would be my only argument. I never thought someone like Mourinho would be in the social media would go to get a point with their players, but the modern manager does what he wants. ”
Situation of Dele Alli
Alli is essentially a squad player this season in Tottenham and is fighting for the season.
The 24-year-old has made a start and a substitute appearance in the Premier League and so far this season has made a start and a substitute appearance in the Europa League for Spurs.
With Spurs, who look strong in attack, especially with Gareth Bale starting to regain form, will be difficult for the attacking English midfielder to do in the weeks and months to come n regain a place on the starting grid.
Tottenham Hotspur going strong
Spurs don't seem to be absent from Alli as the club in north London is doing well in both the Premier League and the Europa League.
Mourinho's side are in the League Second Table with 17 points from eight games at the moment, just one point behind leaders Leicester City.
Tottenham are currently at the top of Europa League Group J with six points from three games.