Retired UFC champion Conor McGregor calls out WWE CEO Vince McMahon on Instagram as he teases crossover

Conor McGregor has called out WWE CEO Vince McMahon on Instagram as he teased a potential cross over into professional wrestling. The former two-weight UFC world champion announced his retirement last month after failing to secure what he felt were ‘exciting’ fights against contenders in either the lightweight or welterweight divisions. Although former head coach […]