The striker recently joined Sunderland from Trabzonspor.
The Black Cats completed a move for the former Hull City striker on Thursday, with him moving on loan from Turkish side Trabzonspor until the end of the season.
He has not proved to be prolific in Turkey, as he went 12 games without a goal, but managed five after joining Hull in January last season.
And Le Tissier says Allardyce will be hoping the forward can get five or six goals to help them avoid relegation this season.
‘I think he [Sam Allardyce] obviously feels he needs a better back up for Jermain Defoe,” he told Sky Sports Soccer Saturday.
“I think he [N’Doye] had a decent start at Hull, and maybe that’s what Sam is looking for, just a little bit of impetus.”
“He’ll take him and hope he can get five or six goals in his first 12 or 13 games. If he can do that, he’d probably help Sunderland stay up.”
Sunderland could certainly do with somebody coming in and adding more goals to the side, with Jermain Defoe having taken on the burden so far.
He has nine league goals so far this season, with their other strikers having failed to impress once again.
Steven Fletcher has four goals in the Premier League, while Fabio Borini has only managed two so far, meaning they are very much in need of another striker coming in and adding to their goal tally.