AFP Sports Agenda for Monday, June 8 (all times GMT): Twitter: @AFP_Sport Instagram: @afpsport + Man City in Euro ban appeal + Barcelona, Real Madrid gear up for La Liga return + Trial of former world athletics chief Lamine Diack opens FOOTBALL -- Manchester City's appeal against a two-year ban from European competition opens at the Court of Arbitration for Sport (CAS) in a case of wide-reaching repercussions. (FBL-EUR-C1-ENG-MANCITY-UEFA) -- "I've missed this place," Lionel Messi says after stepping onto the Camp Nou grass for the first time in three months but when Barcelona return to action he knows it will not be the same. Instead, La Liga's frenzied title race will take another step into the unknown as Barca run out into the biggest and now emptiest stadium in Europe after Real Madrid switch to a different home altogether. (0130) Report by Tom Allnutt (FBL-ESP-LIGA-BARCELONA-REALMADRID) -- Build-up to German Cup semi-finals which feature fourth division Saarbrücken against Bayer Leverkusen on Tuesday and Bayern Munich v Eintracht Frankfurt on Wednesday (FBL-GER-CUP) ATHLETICS -- Lamine Diack, the disgraced former head of athletics' world governing body, goes on trial in Paris facing a potential 10-year prison sentence on charges of accepting millions of dollars to cover up Russian doping tests. (ATHLETICS-DOPING-CORRUPTION-DIACK-TRIAL) ICE HOCKEY -- The NHL moves into the second phase of its reopening process on Monday by allowing players to return to their training facilities in cities where health officials permit it. (IHOCKEY-NHL-VIRUS-HEALTH) afp