The mandated 14-day incubation period will come to an end this weekend and Ighalo is expected to join first-team training ahead of United’s Premier League match against Chelsea on Monday.

The former Watford striker missed United’s mid-season training camp in Spain but has been building his match fitness with performance coach Wayne Richardson, The Times reported.

United manager Ole Gunnar Solskjaer confirmed this week that Ighalo would be in the squad to face Chelsea at Stamford Bridge.