Manchester United boss Ole Gunnar Solskjaer spoke to fans who entered the club’s training ground at Carrington on Thursday to protest against the Glazer family’s ownership.
Over a dozen fans entered the complex but have now left.
They had banners saying ‘Glazers Out’ and ‘51% MUFC’.
Co-chairman Joel Glazer would have been a vice-chairman of the European Super League before United withdrew on Tuesday after a furious backlash.
On Wednesday, he issued a letter of apology admitting the club made a mistake joining the proposed breakaway competition.
“At approximately 9am this morning a group gained access to the club training ground,” said United in a statement.
“The manager and others spoke to them. Buildings were secure and the group has now left the site.”