Moyes is already committed to a frenzied spell of high-stakes transfer activity – now Sunday Express Sport can reveal that big changes could be on the way on his coaching staff. Despite denials, there has been a falling out between Moyes and Ryan Giggs with the 40-year-old Welshman believed to be considering his Old Trafford future once the season ends. Moyes promoted Giggs on to his coaching staff after succeeding Sir Alex Ferguson but there have been some heated exchanges between the pair over some of the training methods and tactics. Giggs also believes he has been under-used, especially when the club have been up against it and in need of some uplifting results. Some disgruntled fans have called for Moyes to be dismissed and replaced by Giggs until the end of the season.