HEARTS head coach Ian Cathro insists Jamie Walker will not leave Tynecastle for less than £1million.

The Gorgie club have rejected an offer from Rangers for the 23-year-old attacker who scored 15 times last season.

The bid was reported to have been derisory but the Light Blues are expected to return with an improved offer. However, Cathro is adamant that Hearts will look for market value for Walker.

“Jamie is one of the most talented players in the country,” he said. “Depending on how he works, he can go on to play at a very, very high level in the game.

“He will not be leaving here for anything other than a value which reflects that.”

Asked to suggest a valuation Hearts would put on a player entering the final year of his contract, Cathro said: “When you look at the market I don’t think you can bring Jamie to your club for anything less than £1 million.

Polish defender Rafal Grzelak has become Hearts third summer signing after the 28-year-old joined on a two-year deal after his contract with Polish top-flight side Korona Kielce expired.