Rex Features4Paul Pogba slumped to the floor after picking up an injury in United’s win over R. Spectators threw missiles, stones, bottles and firecrackers as riot police had to use tear gas to diffuse the rioting. The terrible scenes ruined a friendly match which saw Liverpool’s Sadio Mane give Senegal the lead from the penalty spot. Uniteds travelling support have been accused of singing Chelsea Rent Boys during the 1-0 FA? Cup quarter-final defeat at Stamford Bridge on March 13. A computer algorithm will decide the outcome of each game, so no one will know the result until its over. Championship side Fulham are the worlds first to tailor their cryotherapy treatment to each player. Getty Images8Spectators burst onto the field as security tried stopping themGetty Images8One support. Getty Images3Ivan Rakitic could be used as part of the deal for Barcelona to secure Liverpool's. Reuters5Mamadou Sakho was banned for 30 days by UefaGetty Images5Reds boss Jurgen Klopp was unhappy . Getty Images7Carles Puyol is a Barcelona icon who graduated through club’s academyRex Features.