Alexis Sanchez is at the centre of an alleged doping storm after it was claimed he missed a drugs test at Arsenal's training ground on Monday.
It is unclear who was at fault and whether it is Sanchez, Manchester United's new £600,000-a-week superstar striker, or Arsenal who could be facing a possible sanction. Indeed, there is even confusion about whether doping control officers attended Arsenal's London Colney base.
Initial reports in Spain said testers from UEFA had arrived and requested a sample from Sanchez only to discover he was not there, but UEFA on Thursday night denied any involvement.