Manchester United improved their hopes of securing a top-four finish thanks to a home win on Sunday.
The Red Devils were successful against Aston Villa, winning 1-0 through a Bruno Fernandes goal.
However, the Portuguese was seen having a heated discussion with Casemiro at full-time as everyone else celebrated the result.
Casemiro appeared upset at Fernandes for giving away possession shortly before the final whistle.
United’s attacking midfielder was also told earlier in the game by Jadon Sancho to “stop moaning” at him.
Speaking to Premier League Productions after the match, Fernandes said: “We always do everything to win the game, not every time it is possible but the team always do everything to win the game.
“It’s always important because this club is about winning games. It doesn’t matter the opponent we play against, we knew we were playing against a good team who haven’t lost in 10 games and who have good players and good patterns but we also knew that we are capable to do our job and win the game.
“We did what we were trained to do, we could have scored more goals but we are happy with the 1-0 and the three points.
“It’s really important for us to get top four and then we have to think about winning a trophy so we have to find the energy and aim for the top four and the FA Cup.”