Chelsea and West Brom are heading for a showdown over teenage sensation Isaiah Brown.
The 16-year-old made history when he became the second-youngest ever player to feature in the Premier League when he came on as a substitute in West Brom's game against Wigan last season.
However he stunned the Baggies by signing for Chelsea over the summer after his student deal had expired at the Hawthorns.
According to Goal, Chelsea and West Brom have been attempting to agree a compensation figure for five months but have been unable to do so.
That means they could be heading for a Premier League tribunal in order to decide a fee, with Chelsea hoping to pay around £300,000 and West Brom reportedly asking for closer to £1 million.
Should a tribunal be required, it would be the first of its kind under the Premier League's new Elite Player Performance Plan (EPPP), which were introduced in 2011.
Goal report that Brown had signed a pre-contract with West Brom before defecting to Chelsea but they were powerless to stop him heading to stamford Bridge because he is unable to sign a professional contract until he is 17 in January, and could agree scholarship terms with a club of his choosing.
However his case doesn't fall under the compensation guidelines because of his age, and it is down to both Chelsea and West Brom to agree a fee.
That now appears unlikely and the case is heading towards a tribunal.
Chelsea confirmed over the summer that Brown, an England Under-17 international, had joined their ranks, and he headed off with the club's U21 squad on their tour of America.
“We have invested a lot of time and money in Isaiah’s development as a player and - as one of our most exciting academy products in recent years - we had hoped to bring him through into our first team,” said West Brom technical director Richard Garlick before the start of the season.
“It makes you question why these young players are joining bigger clubs when they are likely to gain more first-team opportunities in the Barclays Premier League at clubs similar to us."