The north London side, which earned a 1-1 draw against Norwich on Wednesday evening, added Lewis Holtby and Ezekiel Fryers to the squad so far this month but has been linked with a host of further names.
But, despite hinting that Spurs are still exploring their options before the close of the window, Villas-Boas conceded that more deals are unlikely.
"No I don’t think so. Obviously, it finishes tomorrow, thankfully. We looked to be quiet in the market," Villas-Boas told reporters. "It’s not impossible that a couple of things can happen, but it’s highly unlikely. I think we need to add quality to the squad."
Tom Huddlestone has been linked with a move to Tottenham's London rivals Fulham, but the Portuguese boss expressed doubt over the possibility of a switch materializing.
He added: "There was an interest from Fulham. I’m not sure if they’re going to follow that interest on. We have allowed the club to speak to the player.
"He’s a player that we rate very, very highly and I think it’s very unlikely it can happen."