The Togo striker scored his fourth goal in five outings under Sherwood in the 2-1 win at Manchester United on New Year's Day prompting praise from the Spurs manager.
"We know he is one of best in league and when he performs as he is at the moment he's almost unstoppable," said Sherwood.
"I have no reason to believe he won't keep it going.
"He's massively important to us. He seems happy in himself and wants to play every minute.
"I am amazed (how quickly he has reintegrated) because he's not had too much of a pre-season either."
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