straight to your inbox every day for freeEdinson Cavani is a doubt for Manchester United's trip to Sheffield United on Thursday night.Cavani has missed the last two games against RB Leipzig and Manchester City after he was forced off at half-time in the 3-1 win at West Ham on December 5.The West Ham win remains the 33-year-old's only start in the Premier League and United manager Ole Gunnar Solskjaer suggested Cavani would not be risked at Bramall Lane amid a hectic schedule."We have to be