O'Neill switched from Juventus, where he was struggling to get a first-team place, to Perugia in a bid to win a place in Uruguay's 23-man squad halfway through this season.
The move finally paid off after a successful second half to the Serie A season.
Has been a regular in the Italian league, playing for five seasons at Cagliari before his move to Juve
A tough midfielder, he boasts the sort of skills that Victor Pua relishes.