Swedish full-back impressed despite Rovers' Premier League relegation last term and the Scot insists that the club will look to extend his current contract
The 24-year-old was one of a few stand-out performers in a season that Rovers fans will quickly hope to forget, and his performances have reportedly attracted interest from several clubs.
But Kean says the Swede will not be allowed to leave the club, and has already spoken with him - making clear that the club will try their hardest to extend his contract.
"The way it worked with Martin was when he was away, there was a lot of interest in him," Kean told the Lancashire Telegraph.
"I have sat down with Martin and said to him we want him to play. He is getting over a groin operation, and is probably not going to be fit for the start of the season.
"But I have said we want to keep him and want to look at extending his contract.
"I think there were clubs who enquired and we said ‘not for sale’."