The alleged assault of a woman in her early 20s took place at 4:30 a.m. Saturday in the Cornish town of Redruth, the BBC reported.
All seven suspects have been interviewed and released on bail, Sky News reported.
They are due to return to the police station on dates between Sept. 30 and Oct. 8.
A spokesman for the soccer club said it was not appropriate to comment during a police investigation.
2014: The Year in Music [PHOTOS]