While Brighton's 1-0 win on Friday night secured their Premier League status, the result raised more questions over United's direction under Mourinho.
But they were only able to create one chance in the entire first half, while their first shot on target came through Paul Pogba in the 49th minute.
I did not succeed in persuading my players that getting four more points is important.
"I said during commentary, any player wondering why they aren't playing in the cup final, show them that video, that attitude was bad, it was awful".
The team from the south coast are eight points clear of 18-place Southampton and 17-place Swansea. "We never stop and that's why I think we won it".
"You look at Anthony Martial, [Marcus] Rashford, [Jesse] Lingard, you look at [Alexis] Sanchez, [Romelu] Lukaku".
"Of course a positive reaction in the last 20 minutes, obviously no one likes to lose and when you feel like you are losing the game you always try and win". You now have the answer why always Lukaku.
Earlier in the game, David De Gea was impressive for the visitors, ensuring all Brighton's attempts were stopped from touching the back of his net, with several saves to deny the home team. We have got a very, very strong attacking line-up.
"Maybe now you understand why some players play more than others and you don't ask why A, B or C don't play more", Mourinho added, clearly talking about Martial and Rashford.
But Gross nodded in a Jose Izquierdo cross after the break to score his seventh top-flight goal of the season, Marcos Rojo unable to clear the effort before it crossed the line, to guarantee Brighton will stay in the Premier League.
"He said it was important to him to get the four points to finish second - when you can't the message to your players as a manager, the manager has to go, or the players have to go", stated Neville.