Paul Pogba must have been devastated to leave the field of play after just 19 minutes, last night.
The 24-year-old, who couldn't contain his excitement during the routine Champions League anthem, was given the captain's armband by Jose Mourinho for the very first time.
Pogba enjoyed a lively start to the Champions League tie, but the French midfielder left Old Trafford on crutches after suffering an unfortunate hamstring injury.
Here's a clip of Pogba leaving the stadium on crutches:
Jose Mourinho later confirmed Pogba's injury fears, but failed to explain its severity, saying: "I don't know honestly. By experience, by looking at feeling it, it is a hamstring. Big, small I don't know but a hamstring for sure."
Pogba was replaced by Marouane Fellaini, who in turn bagged Manchester United's first goal of the game in the 35th minute.
The 29-year-old was a handful after coming on as a sub, and pundit Graeme Souness praised the Belgian in a rather bizarre statement, saying that Pogba should be more like Fellaini:
Credit: TV3 Sport
"'He's a bit of a YouTuber. I want to see Paul Pogba do what Fellaini does." he told Irish channel TV3.
Souness then went onto criticise Pogba for not winning much during his career thus far.
I'm not being funny, Graeme, but the lad has won four Serie A titles, two Copa Italias and a Europa League at the age of 24. Is that not good enough?
This isn't the first time Pogba has been criticised in the past week. Garth Crooks launched a scathing rant on the France international, slating his hairstyle.
"I also want to discuss Paul Pogba's new hairstyle, which features a red streak.
"I only mention it because he clearly wants to bring it to our attention. There is so much for the midfielder to do at United and he still insists on behaving like an adolescent." " Crooks told BBC Sport.
Thoughts on Pogba's ability? Is he doing enough in a Manchester United shirt?
Let us know in the comments section.