Philippe Clement is just about holding off the calls from the more frustrated elements of the Rangers support for his head. But with some huge tests on the horizon, a failure for the Belgian manager to pick up a head of steam could hear those slight murmurs turn into much louder protestations. Rangers fans are frustrated with the team’s lacklustre performances with Philippe Clement urging patience as his new-look team get used to the expectations of Ibrox. But now one ex-England international is claiming that should Clement ever get the chop – however unlikely that might be – one former Chelse…