Speaking to HITC Sport via telephone interview as part of the Farah menswear #MatchReady campaign, Mason highlighted the professionalism of the players when they are with the England side:
England's Jack Wilshere was to blame for Mason's injury in June 2015
He said: "We're professionals at the end of the day, but obviously Tottenham and Arsenal is a massive rivalry. The manager works very hard on chemistry and being together as a team when you join up with England.
"We make sure we put our differences aside for our country. I'm sure everyone's doing that now, they seem to be a close-knit group from what I've seen, and that can only benefit the team on the pitch."
The two side's representation amongst the England squad is heavily weighted in Spurs' favour this time round, with five players likely to play an important role for their country at Euro 2016.
Arsenal have only Wilshere, with Alex Oxlade-Chamberlain, Theo Walcott and Kieran Gibbs all missing out despite featuring in qualification.
England are stacked full of Spurs talent including Kyle Walker, Harry Kane, Danny Rose, Eric Dier and Dele Alli
Mason would not be drawn on naming a player to look out for in France, but admitted he will be watching with keen interest:
"I'm just going to watch it and enjoy the spectacle, there are lots of exciting players, I'm sure someone will have a purple patch."
He was more emphatic, however, when pressed for his tip on who will win the tournament:
"England," he replied.
Spurs and Arsenal rivals Ryan Mason and Alex Oxlade-Chamberlain battle it out during England training last year
Ryan Mason was at The Water Poet in East London to watch the Euros as voted by the Farah menswear #MatchReady campaign. To see the full list of pubs visit: http://www.farah.co.uk/blog?post=matchready-pub-guide