Austin has questioned Liverpool's negotiating tactics with the Egyptian.
He told talkSPORT, "Even before the end of the transfer window... I honestly think if it's not done by the summer, before the end of this season, then people are going to start looking
"And then say clubs come in and start throwing silly offers in, £50million... they're not going to sell him for £50million, of course, but just testing the water.
"I think he is now the top scorer at the moment, top assists. It would be crazy for them [Liverpool] to let this one go."
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