Rooney said: 'I was sad when Louis van Gaal left Manchester United. During the 2016 FA Cup final, his wife found out that Louis was getting the sack, regardless of the result.
'To be fair, he knew before the game, and then after the game, when we were having a party for winning, he was with his family in the corner being quiet, when usually he's quite a loud and bubbly character.
'I went over to him and told him to enjoy the party because we had won the cup, but he knew he was getting sacked but wasn't told by the club. The next day after the party at breakfast, he gave us his plans for pre-season, so he stuck to his job right to the end.'