France international Diarra has emerged as a key player for Pompey since arriving from Arsenal in January for £5m which has alerted Spurs.
But Fratton Park chief executive Peter Storrie has dismissed the links and warned the club’s Premier League rivals not to waste their time with bids.
He told The News: “I had dinner with Daniel Levy from Spurs. If they were interested in Lassana Diarra I think he may have mentioned something!
“Being that I’m up at this meeting with Spurs I might have had an insight into that. Lassana is one of our most important players, and only arrived at the club in January.
“He is not for sale and that is the end of it.”
Ellis Harrison struck in the second half to secure Bristol Rovers a 1-0 win at relegation-threatened MK Dons as the Pirates moved within four points of the play
Nottingham Forest heaped more pressure on under-fire Steve Cotterill as they secured a 2-1 win at the City Ground - but Aitor Karanka's side had to work hard fo
Two goals in the final 12 minutes saw Oldham climb out of the League One relegation zone with a 2-0 victory at Scunthorpe.
Substitute Sean Maguire celebrated his return to action with Preston's second and third goals in a 3-1 Sky Bet Championship comeback win at Bolton.
James Collins scored and was sent off as Luton drew 1-1 at Cambridge in League Two.
Ryan Sessegnon continued his remarkable scoring run as Fulham won 2-1 at Pride Park to go above Derby in the Championship.