Spurs have been linked with Dimitar Berbatov, Nani and Yevhen Konoplyanka this month.
Chairman Daniel Levy is renowned for his love of an 11th-hour deal, but Sherwood ruled out the possibility of any late incomings at White Hart Lane.
When asked what percentage he would put on Spurs signing anyone before the Friday night deadline of 2300, the Tottenham manager said: "Zero."
There is always a focus on Tottenham every deadline day because of Levy's history of last-minute signings.
Rafael van der Vaart, Mousa Dembele, Hugo Lloris and Robbie Keane have all signed for Spurs on deadline day in recent years.
The Spurs chairman has frequently asked Sherwood if he needs any new players, but, after the club made seven additions to the squad last summer, the head coach feels there is no point in making an already bloated squad bigger.
"Daniel's asked if I want to strengthen in this area or need any help, but I'm confident with the players we've got," Sherwood said.
"I don't need anyone else, thank you very much.
"They (Levy and technical director Franco Baldini) can bring them in (but) they won't play
We're in this together
Unless we're all in agreement they don't bring them in, because there's no point because they won't play.
"It's not always the (right) way, just to buy players
We need to put things together, like a jigsaw here, and I've got real trust in the players that we've got."
Berbatov has been linked with a dramatic return to Spurs, where he enjoyed the most prolific two years of his career, but the Fulham striker looks set to join Monaco instead.
When asked if there was a possibility of signing Berbatov, Sherwood said: "No
I like him and think he's a very good player, but we've got strikers here who can do a very good job.
"It's very, very unlikely (any more will come in)
If it closed now, it would be fine."
Konoplyanka looks set to leave Dnipro Dnipropetrovsk, but Liverpool are favourites to sign the Ukraine winger.
"I don't think there's any mileage in Konoplayanka (coming to Spurs)," Sherwood said.
Source : PA
Source: PA