What professional footballer who plays as a midfielder for Aston Villa and for England U21 has played in the HKFC Soccer Sevens?
HKFC Soccer Sevens:  Held since 1999, many young professional players have made a name for themselves in the tournament including Premier League players Gabriel Agbonlahor, Jack Grealish, Rolando Aarons, Glen Johnson, Anton Ferdinand, David Bentley and Marc Albrighton, as well as Scotland internationals Shaun Maloney, Craig Beattie and Chris Burke. Jack Grealish: Jack Grealish (born 10 September 1995) is a professional footballer who plays as a midfielder for Aston Villa and for England U21.
Jack Grealish