With third bottom Southampton and 17-placed Swansea to meet on Tuesday, Brighton now can't now be relegated. However, the pair plays each other in one of the remaining games, which means that Chris Hughton's side are safe.
United offered the first real threat on goal, as Belgian midfielder Marouane Fellaini saw a goal chalked off for offside. "For me it is, but for some of my players it doesn't look like it's very important". United barely troubled Brighton's goalkeeper in the first-half due to limited opportunities.
An ecstatic Gross revealed he was initially unsure whether he scored before referee Craig Pawson awarded the goal. Nobody is going to keep him away from a game of that magnitude.
De Gea pushed the ball onto the head of Gross and although Marcos Rojo hooked it clear from underneath the crossbar, goal-line technology confirmed it had crossed the line. The result also meant that they lost this season to all three promoted teams - Brighton, Huddersfield and Newcastle United. He was a figurehead for United's resilience in the FA Cup semi-final and supporters will hope he can inflict further Wembley damage against Antonio Conte's men. "The players that replaced others they didn't perform at a good level and when individuals don't perform at a good level, then it's hard for the team to perform at a good level".
The Catalan coach has swept his side to the Premier League title, with Yorke of the opinion that the former Barcelona boss would enjoy similar success at Old Trafford if handed the same squad as an arch-rival. However, staying in the English top-flight this season maybe equals that achievement.
And whilst they may receive salvation in the form of a Europa League win, which would return them to the Champions League next term, that would first require them to overturn Atletico Madrid in the second leg of their semi-final on Thursday night. However, they have defied the odds to secure another campaign in the top tier of English football.