When Glen Kamara left Rangers last summer, there was a feeling that the Leeds United midfielder probably stayed a season too long. And he wasn’t the only one. Only this week has Philippe Clement taken aim at Ross Wilson’s disastrous ‘player contract model’ which has saw Alfredo Morelos, Ryan Kent and Filip Helander walk out the door at Ibrox for nothing. Six more are set to follow them in the coming weeks. But where Glen Kamara differs from the rest is that Rangers recouped a rather impressive £5m for the £50k midfielder. And with Leeds United on the precipice of Premier League promotion, the …