New Manchester United boss Erik ten Hag played a pivotal role in the club severing ties with Ralf Rangnick at the end of last season.
Ten Hag was not willing to work alongside Rangnick in his proposed consultancy role at the club which he was due to take up at the end of the season, according to ESPN.
Reports also suggest that Rangnick had expected to have a detailed face-to-face meeting over the club's future with the Dutchman, but ten Hag was only willing to grant him a phone call.