The striker finished as top scorer in African Cup of Nations qualifying for Nigeria with seven goals, before scoring five at the tournament last summer.
Tottenham made their own late attempt to secure a loan deal for Ighalo on Deadline Day.
Inter Milan also wanted to sign Ighalo, when their pursuit of Chelsea forward Olivier Giroud failed, but the Nigerian had his heart set on a move back to English football with United.
According to unconfirmed reports, Manchester United will pay a third of Ighalo’s wages during his time at Old Trafford.
This works out at £100,000 a week. Ighalo, who has just under two years left on his contract with Chinese Super League outfit Shanghai Shenhua, is currently earning an astronomical £300,000-a-week.
United will also pay Shanghai Shenhua a loan fee of between £2 million and £4 million.
It’s understood that United will also have an option to sign Ighalo on a permanent deal at the end of his loan.
United fans will be relieved that a striker is arriving to ease the burden on Martial and Greenwood.
