The France international completed a £30m transfer to White Hart Lane on the final day of the summer transfer window.
Spurs signed Sissoko in a big-money deal from Championship side Newcastle United despite the midfielder’s poor performances in the 2015-16 top-flight campaign.
The 27-year-old has failed to score a goal or make an assist in six Premier League appearances under Tottenham manager Mauricio Pochettino so far.
Former Arsenal and Manchester City striker Quinn has been left underwhelmed following Sissoko’s muted start to life at White Hart Lane.
“One of the best stories of the back end of summer was Moussa Sissoko,” Quinn told Sky Sports.
“Everton thought he was ready to sign a pre-nup and tie the knot. Then he was worryingly uncontactable. Everton were about to call in Liam Neeson to track him down when Sissoko turned up in London wearing a Spurs jersey.
“The fee of £30m was about double what Spurs generally like to pay for incoming players. His form so far has probably been about half what they expect from those players. Sissoko’s handful of appearances so far have not produced any goals or assists.”
Tottenham have failed to win their last seven games in the Premier League, the League Cup and the Champions League.
The north London side lost 1-0 to Bundesliga side Bayer Leverkusen in the Champions League at Wembley last weekend.
Spurs drew 1-1 with Arsenal in Sunday’s north London derby after Harry Kane cancelled out Kevin Wimmer’s own goal.
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