With a surprising 1-0 loss to Newcastle on Sunday, United ceded some of the initiative in the race for second place in the Premier League and left its manager cursing the "gods of football" on his latest fruitless trip to the northeast.
The St James' Park faithful roared their side on from the start on a crisp Tyneside afternoon, where David de Gea was called into action after just five minutes to superbly stop Shelvey's strike nestling in the top corner.
"If you ask me if I think Newcastle are going to be in the Championship next season, I say immediately "no way", he said.
"I'm more happy with the points than which team they came against", he said.
"They got from us a defensive mistake, and from a lateral free-kick they scored".
"We had some chances with the score at 0-0".
"We have had the same situation all season. It keeps us believing we can win against anyone".
And United should have equalised soon after, but when Newcastle failed to clear a corner, Anthony Martial saw two shots blocked on the line by Gayle. Were they lucky? Yes. "But sometimes you attract the luck with your state of mind and, after the 1-0, they fought for their lives".
Matt Ritchie's 65th-minute goal - following a free kick awarded for a dive by United defender Chris Smalling - gave Newcastle a victory that lifted it out of the relegation zone.
"It's true I haven't won there in the League but I don't know why", he said.
"I thought it could be a massive achievement (even in September), but watching the teams and the differences between the teams, the experience of the different clubs, now you realise it is even more hard".
"I lost and I drew a few times, I hope the result is different but I know the characteristics of the game will not be hard", Mourinho said.
Mourinho felt the need to defend Pogba from criticism this week with the likes of former Man United players Rio Ferdinand and Wayne Rooney suggesting that the current midfield setup in the team wasn't making the most of his ability, with his form suffering as a result.
It proved to be enough to earn Newcastle three invaluable points, but only after two goalline clearances from Gayle denied Martial in the closing moments.