talkSPORT pundit Trevor Sinclair has urged Manchester United star Cristiano Ronaldo to keep his head down, insisting the 36-year-old should 'keep his mouth shut'.
The Portugal international, who returned to Old Trafford in the summer following spells at Real Madrid and Juventus, wants the United hierarchy to get the next permanent manager appointment right.
Ralph Rangnick was drafted in to lead the team until the end of the season, before the German takes up a 'consultancy role'. United currently sit seventh in the league, 22 points off leaders Manchester City.