Huddersfield Town have agreed a club-record fee of £10m for Manchester City's Aaron Mooy.
The Australian midfielder spent last season on loan at Huddersfield and played in their play-off final win over Reading, which secured them a place in the top flight.
It is thought the fee from the Premier League newcomers will be made up of an £8m initial payment, plus a further £2m in add-ons.
Mooy, 26, joined City from Australian team Melbourne City 12 months ago on a three-year contract.
He has not made a senior appearance for Pep Guardiola's side.