Antoine Griezmann scored the crucial goal as Atletico Madrid knocked Bayern Munich out of the Champions League on away goals.
The Frenchman calmly slotted past Manuel Neuer, to ensure the La Liga side reached the final for the second time in three seasons.
Griezmann has been a vital player for them throughout the campaign, and the goal was his 31st in all competitions this season.
The 25-year-old would undoubtedly transform United's attack, which has been lacklustre too often this season, especially in the first half of games.
Griezmann could potentially be lured by United's money and history, but next season it looks unlikely there will be Champions League football to play.
Managing to convince him to sign is a long shot considering how close Atletico are to winning it this season, and while Chelsea bought players from the Spanish side in 2014 when they reached the final, they had Champions League football on offer.
United fans are keener than ever for the club to get the chequebook out this summer to sign Griezmann, but there are those which understand a deal may not be simple. Here is a look at the reaction via Twitter to his display against Pep Guardiola's Bayern...
NOTE to Ed Woodward:— Fletch™ (@FletchTM) May 3, 2016
The name is spelled A N T O I N E
and Griezmann is with two "N"s mate.
The Fans#MUFC Transfer Rumors
I don't see Griezmann joining us.. especially if we miss out on Top4. Great player #MUFC— Vyron RED Turner (@VyronR) May 3, 2016
Griezmann the missing spark needed on the right wing for us..absolutely #MUFC— Tej (@MUFC_tej) May 3, 2016
Reality check for my fellow #MUFC fans - if LVG stays, the only Griezmann we'll see at OT is the Scottish dude who services the turnstiles!— Milford Jinx (@jinxmhgs79) May 3, 2016