Manchester United manager Ole Gunnar Solskjaer has backed the right of fans to protest, but said they needed to be "civilized" after Sunday's breach of security at Old Trafford led to their Premier League game against Liverpool being postponed.
Protests from supporters against the Glazer family, which have taken place since they bought the club in 2005, have reignited since United's involvement in the botched attempt to create a breakaway European Super League.
United fans stormed Old Trafford Sunday and invaded the pitch, while protesters also clashed with police outside the ground, with six officers injured during demonstrations.
Solskjaer said the Glazers were working to improve their communication with supporters and that he had received a personal apology from the American owners.
United thrashed AS Roma 6-2 in the first leg of their Europa League semi-final tie at Old Trafford and Solskjaer hopes his players can put the turbulent events of the past week out of their minds and focus on reaching the final.
Source: Reuters