Manchester United have agreed personal terms with Antoine Griezmann over a contract worth £72.8 million, according to reports.The Sun claim that the Atletico Madrid forward has accepted United’s offer of a five-year deal worth £280,000 a week.United have indicated that they will meet Griezmann’s £89 million release clause, which will take the total cost of the transfer, including fee, wages and bonuses, up to £170 million.United have also assured the France international that they will significantly improve their squad with new signings after he had reservations about joining Old Trafford if they failed to secure Champions League football for next season.