Bentley is currently recovering from a knee injury he picked up during his loan stay at West Ham in October.
“David is a friend of mine. He needs to play football,” said Robinson. “He would be perfect for us.
“He knows where I am. We are only 40 minutes from where he lives and we both have the same agent.”
Robinson added: “We’ve not approached or spoken to Tottenham.
“I worked with him at Blackburn and we’ve always stayed in touch. He’s someone I respect immensely and someone I know has got an amazing gift.
“If he ends up playing at this club we’ll be very fortunate but that’s a long way away.
“You’ve got to be realistic. It might be something we can pull off and I’ll definitely ask the question should it come up.”