Cristian Ceballos at Spurs
The 23-year-old barely featured for the Addicks last season, making just seven appearances after arriving on a free transfer following his release by Spurs. Most of his games came early on in the season, before injury severely disrupted his debut campaign at The Valley.
Crisitian Ceballos in action with West Ham's Dan Potts and Raphael Spiegel (R)
The attacking midfielder spent four years at Tottenham after arriving as a skilful and talented young player. Arriving in 2011 after his release from Barcelona, Ceballos was often involved in pre-season friendlies with the first team and demonstrated his potential to some degree during severe of those matches, but he ultimately failed to make the step up to the first team.
In his final season at White Hart Lane, the Spaniard made the bench just once, away to Hull City, clearly failing to make a significant enough impression on Mauricio Pochettino to warrant a new contract.
He did have a moderately successful loan at FC Arouca in the top flight of Portuguese football in the 2013-14 season, and will be hoping that he can return to some form at Sint-Truiden, who won the Belgian second division last season.
With the Addicks eager to return to the Championship at the first attempt after suffering relegation to League One last season, Russell Slade will likely be relying on players who will offer him the best chance of impressing in the division, not a flair player who is still trying to forge a career in senior football.
Ceballos wil have one year left on his Charlton contract when he returns from Belgium next summer. Hopefully he will arrive confident and in form, and with the Londoners back in the Championship.
Charlton's Cristian Ceballos warms up