Greater Manchester Police have launched an investigation after an officer was left needing emergency hospital treatment following disturbances which led to the postponement of Manchester United's Premier League clash with Liverpool at Old Trafford.
Fans broke into the stadium and invaded the pitch in protest at club owners the Glazer family, while outside the ground bottles and barriers were thrown at police officers and horses.
Two officers were injured, with one "attacked with a bottle and sustaining a significant slash wound to his face, requiring emergency hospital treatment", GMP said.
It said in a statement: "On the back of the indefensible ESL proposals, and an 'apology' from the Glazers which we do not accept, we need to give fans a meaningful share in the ownership of United and a meaningful voice in how it is run.
"The Government now needs to act. That has to mean a process which results in fans having the opportunity to buy shares in their club and more to the point no single private shareholder holding a majority ownership of our football clubs which allows them to abuse that ownership."