Wellington has been an Arsenal player for over four years yet, owing to work permit problems, has never played a competitive game for the Gunners.
The skilful Brazilian winger has moved to Championship side Bolton Wanderers, and the switch will enable him to finally test himself in England, having spent several seasons out in Spain.
Now 22, Wellington struggled for consistency during many of his early loan spells, but was impressive last season at Almeria as he created several opportunities for his team-mates.
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He may not be a prolific goalscorer himself, but the Brazilian youth international is a regular threat with his combination of pace and flair.
A good crosser, Wellington is perhaps a little too selfish on some occasions, but he is a player who can cause plenty of damage to the opposition.
Wellington reportedly signed a new contract with Arsenal ahead of the Bolton move, but, even so, his long-term future with the Gunners is unclear and if he does eventually return to the club he will have to take up one of the slots for senior players in their Premier League squad.
If the youngster is capable of performing consistently in England's second tier then he may finally be afforded a long-awaited opportunity to impress with the Arsenal first-team.
If he fails to seize his opportunity, however, then it may very well signal the end of his chances of making the grade at the club, which puts into context just how pivotal a stage this is the former Fluminense player's young career.
How it pans out will be very interesting to witness indeed.