The modern football manager might wear classic Reeboks, or knackered Converse, or trackie bottoms tucked in socks but, to continue paraphrasing the Arctic Monkeys song, there ain't no romance in our game no more. Nothing endures. The average managerial tenure tends to last between 18 months and two years. For Ole Gunnar Solskjr at Besiktas, it was a little more than seven months; Jose Mourinho got 14 at Fenerbahce.