Tom Robert has been reported missing after attending the play-off final in London on Saturday.
A passionate Middlesbrough supporter, Tom has not been seen or heard from since the match.
His phone was later found in the Hyde Park area of London.
Tom lives in Hereford and may have been travelling back home. He is considered vulnerable.
He is approximately 6β1β tall and was last seen wearing dark shorts and a Middlesbrough shirt.
If you have seen Tom, spoken to him, or have any information that could help, please contact the police immediately.