Unusual injury puts Ronaldo in doubt for first Rangnick game reports

Cristiano Ronaldo is a doubt for Manchester United's Premier League meeting with Crystal Palace on Sunday after reportedly injuring his knee while performing his trademark 'Siuu' celebration in the win against Arsenal.

United will have Ralf Rangnick in the dugout for the first time when they host Palace at Old Trafford, although the German might not be able to call on the services of top-scorer R