West Bromwich Albion have criticised "unclear" rules for the EFL Trophy after striker Andre Wright's loan move to Yeovil Town fell through.
The 20-year-old played for West Brom's Under-21 side in the EFL Trophy in August before a loan spell at Coventry.
His move to Yeovil for the rest of the season had been announced on Tuesday.
But players can only appear for two clubs in one season and West Brom say the EFL deem the Trophy game to be a first-team fixture.
"It's a great shame because it would have been another excellent development opportunity for Andre," Albion director of football administration Richard Garlick told the club website.