The Cameroonian striker netted a hat-trick as the Blues beat Manchester United 3-1 on Sunday and his performance was certainly not lost on Cahill.
"This hat-trick is going to do his confidence the world of good," Cahill said.
"He is a top, top player, a great performer. He's been involved in massive games in the past.
"It's great to have a player of that ability - with all his experience - in our squad."
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