Cristiano Ronaldo is a major doubt for Ralf Rangnick's first game in charge of Manchester United after picking up a knee injury during the club's win over Arsenal on Thursday.
The 36-year-old scored twice, grabbing his 800th and 801st career goals, as United came from behind to win 3-2.The victory moves them up to seventh in the Premier League and just three points off the top four.Interim boss Rangnick watched the game from the stands but will be in the dugout for Crystal Palace's visit on Sunday, though it looks like he'll be without the club's talisman.Reports suggest that Ronaldo may have hurt his knee doing his trademark jumping 'SIUU' celebration after scoring the winning penalty against Arsenal at Old Trafford.Although the Portugal.
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