The Watford captain was impressed his club signed a player as high-profile as the French international.
Like lots of Hornets fans, the forward thought the deal was a significant one as the club prepare for their return to the Premier League.
"Someone of that magnitude coming in is only going to get players buzzing again," Deeney told Sky Sports.
"When someone from Tottenham decides to come here, if any one of his mates decide to come across they’re more than welcome.
"He hasn’t come in and given it the big ‘I am’, he’s come in and been respectful.
"I think he’ll fit in quite well. He’s a big boy as well so I don’t think anyone will mess with him."
Deeney himself has been the subject of transfer speculation this summer, with the likes of Newcastle linked to the striker by the Mail before the 27-year-old signed a contract extension.
Can Watford sign anyone else from Tottenham?
The forward's wish to get a few of Capoue's former Spurs teammates to make the short trip across North London to join Watford may be a rather feasible possibility.
There are several other players on the outskirts of the Spurs first team that Quique Flores may be able to bring in at Vicarage Road, and considering the size of the squad at White Hart Lane, Mauricio Pochettino and Daniel Levy may be willing to do business.