The powerful midfielder completed his switch to north London last week.
Arsenal, Manchester United and Aston Villa have all been reported to have shown interest in the Malian midfielder in the past few seasons.
But he has now decided to join Antonio Conte’s Tottenham Hotspur side and, according O’Hara, that singular decision shows how attractive N17 has become since beating Arsenal to Champions Leaguefootball.
The former player now turned TalkSport pundit told Grosvenor Sport: “ I think he’s a great signing for Spurs, I really do.
“I really liked him last season at Brighton – athletic, good on the ball, strong, and showed good quality. I think he’s a really good signing.
“What I love about it is the fact that again it’s another signing that Spurs are going to get done early doors.
“I know there were other teams after him – Arsenal, Man United – but it seems as if players are starting to pick Spurs over anyone else, which is the Antonio Conte factor.
“With Spurs now and the facilities they’ve got, they really mean business. I’m really surprised how well the transfer window is going for them right now.
“The Bissouma move is extra sweet for Spurs fans. That’s the biggest thing right now, Spurs are getting players over their rivals like Arsenal.
“They shop in the same window as Arsenal and in the past, last summer, Arsenal had a better transfer window, but this year… we’re only in June.
“It’s ridiculous that Spurs have signed three players already, it’s unheard of for Tottenham.
“For Spurs to get a player of that quality over Arsenal just shows where they are now and how big getting that Champions League spot was. It’s showing that Spurs are going to attract better players to their team.”
Check out the latest Premier League transfer speculation below...

1. Forest want Gibbs-White
Nottingham Forest are stepping up their attempts to sign Morgan Gibbs-White and Wolves could be willing to sell the forward. (TEAMtalk) | Getty Images

2. Johnstone close to Palace move
Sam Johnstone is set to join Crystal Palace on a free transfer after agreeing to a four-year deal with the Eagles. (The Sun) | Getty Images

3. Jesus trying to seal Arsenal switch
Manchester City forward Gabriel Jesus is ‘trying’ to force through a move to Arsenal. (Goal Brazil) | Getty Images

4. MANCHESTER, ENGLAND - APRIL 23: Emmanuel Dennis of Watford during the Premier League match between Manchester City and Watford at Etihad Stadium on April 23, 2022 in Manchester, England. (Photo by Alex Livesey/Getty Images)
Everton have joined the race for Watford’s £20m forward Emmanuel Dennis. West Ham and Newcastle United are also keen. (Daily Mail) | Getty Images