Tottenham boss Jose Mourinho admitted Southampton had every right to feel short-changed after his side’s 3-2 FA Cup fourth round comeback win landed a home tie against Norwich City next month.

Angus Gunn was adjudged to have brought down Heung-Min Son inside his own penalty box, who kept his cool to rifle home a late penalty, after the Saints had led going into the final 10 minutes at the Tottenham Hotspur Stadium.

City will now travel to north London for a fifth round tie to be played between March 3 and 5, with official confirmation expected later on Thursday on the date and size of the potential away allocation.

It is a swift repeat of the clubs' recent Premier League meeting, when Mourinho's men had to ride their luck again with Son slotting Dele Alli's deflected late shot to earn a 2-1 league win.

Mourinho bemoaned a growing injury list for Spurs after a nervy cup passage, with Harry Kane, Giovani Lo Celso, Erik Lamela, Moussa Sissoko and Ben Davies all absent against the vibrant Saints.

"It's a big cup game, two teams played at the maximum of their potential," Mourinho told his official site. "Southampton came with their best team and they were very strong, stronger than us physically.

"They were fresher, had more intensity, they tried to win the game, they didn't want to defend the result or try to wait for something to happen, they were brave and we had to cope with that with a game plan that was detail by detail.

"We started with a back five, resist, kept ourselves in the result and the only thing that wasn't in the programme was to concede a second goal, a second goal could kill us mentally.

"But I think it was the click, the click for the boys to give everything and I'm so, so pleased for the guys.

"We've a very small group of players with so many problems we're having, and everyone is giving absolutely everything. To lose after giving so much would have been painful. I'm so happy for them. They were phenomenal.

"The way they reacted was fantastic, showed incredible heart and connection with the crowd. I think the best team lost - but we deserved to win."

Full FA Cup fifth round draw

Sheffield Wednesday v Manchester City

Reading v Sheffield United

Chelsea v Liverpool

West Brom v Newcastle

Leicester City v Birmingham City

Derby v Manchester United

Tottenham v Norwich City

Portsmouth v Arsenal