In his behind-the-scenes video upon signing for the club, the former Chelsea midfielder is raring to go as he stepped out onto the Old Trafford pitch for the first time as a Red.
From unveiling the famous number seven shirt to reuniting with Lisandro Martinez since clashing at Stamford Bridge, there was plenty of action to sink your teeth into as Mount signed with us.
It seems fans enjoyed it just as much as Mason, with plenty of you reacting in the comments to his arrival in M16.
Here’s what fans on YouTube have been saying…
@dkchief2962: You can tell he’s genuinely excited to be the club.