Defender has been a stand-out at Dens – and has plenty of suitorsDundee defender Luke Graham says he is no clearer on where he will be playing his football next season amid speculation that both Celtic and Rangers are weighing up a bid this summer. Graham’s Dundee contract runs until June 2027, but there is a growing expectation that he will be sold by the Tayside outfit this summer. Portsmouth had bids rejected for the Scotland Under-21 centre-back in January, while Celtic and Rangers have been linked in recent months. The Ibrox side’s interest is understood to be more intense.Luke Graham has been a stand-out for Dundee this season…