Onana is likely to miss four Premier League games with Manchester United while honouring his national team duty. Those include a home encounter with Tottenham, Wolves at Molineux, West Ham at Old Trafford and a trip to London to take on Aston Villa.
He could also remain unavailable for United's FA Cup third-round tie away at Wigan which is slated to take place on January 8 if he is required to attend a pre-tournament camp for Cameroon. Moreover, he will also miss a potential fourth round FA Cup tie, scheduled on the weekend of January 27-28, if the Red Devils qualify.