Young Sunderland forward Andrew Nelson has reacted after it was confirmed he will miss the rest of the season with a knee injury.
The teenager suffered a knee injury playing for loan club Hartlepool United at the weekend.
Nelson, 19, suffered damage to his medial ligaments after coming off the bench late in Saturday's game against Plymouth Argyle.
Nelson took to Twitter to post this message: "Devastated doesn't come close to how I'm feeling right now but that's how football can be.
"I would like to take the opportunity to say thank you to everyone at Hartlepool United, you've given me the experience and the opportunity to see football from a different perspective and for that I won't forget it anytime soon.
"I would like to wish the fans, the coaching staff and the players all the best for the season and hopefully turn things around in time. Thank you."
Hartlepool’s head physio Ian Gallagher said: "The scan confirmed our worst fears.
"Andrew has now returned to Sunderland for treatment, but the nature of the injury means it’s doubtful that he will be able to play again this season."
Nelson joined Hartlepool in last month's transfer window.
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Meanwhile, Sunderland have confirmed Tommy Robson has joined Irish side Limerick on loan until the end of the season.
As reported by the Echo on Monday, the Under-23 skipper has joined the League of Ireland Premier Division side.
A club statement read: "The Stanley-based player moved to Sunderland in 2012 from Darlington’s Centre of Excellence, and has since gone from strength to strength on Wearside.
"Making his first-team debut on the final day of the Premier League season in May 2016, the promising full-back has featured 19 times for the Black Cats’ development squad this term.
"Everyone at Sunderland AFC would like to wish Tommy the very best while on loan at Limerick."