Spurs centre-back Vertonghen missed out on playing for Mourinho’s side against Liverpool.
The Portuguese boss opted to pick Japhet Tanganga ahead of Vertonghen, as he went for pace over experience at the weekend.
But Mourinho wants Vertonghen to come back into Spurs’s starting line-up tonight, as they look to avoid an upset in the cup.
“Like a top professional he is, like a top professional he is. Jan Vertonghen is untouchable. Professional person, absolutely untouchable so my decision was to play with two very fast players on the side of Toby Alderweireld," Mourinho said.
“Davinson is really fast and Japhet is the same and the decision was with people like Salah and Mane the most difficult thing is to cope with their speed and the way they attack from the outside to inside, the movement Firmino makes to create these spaces for them and I think my decision was correct.
“Sometimes we have the feeling that we should do a different way and in that game I feel that decision was correct. Of course Jan wanted to play, that’s obvious, but since I arrived professional since day one and tomorrow, he is back to the team.”
Vertonghen’s omission from Tottenham’s team at the weekend rather highlights his poor form in recent weeks.
The Belgian defender has shown signs of age lately, with question marks forming over whether Spurs should even offer him a new deal.
Vertonghen’s contract at Tottenham expires at the end of the season, and there is a growing feeling that his time at the North London club may be coming to an end.
Spurs drew 1-1 with Boro in the first-leg of their tie, but do have home advantage this evening, and will be expected to progress.
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