The attack-minded midfielder is currently on loan at League One side Leyton Orient from Premier League outfit Tottenham Hotspur.
The 20 year-old has scored eight league goals in 30 appearances for the Os this term, producing a string of eye-catching display.
West Brom have made a modest £1.5m bid for the Antrim native, in an attempt to prize him away from Spurs where he still has two years left on his current contract. Alternatively, Donley could join the Hawthorns club on a season-long loan deal.
If the Baggies are successful, Donley will link-up with international teammate Isaac Price.
Donley switched his allegiance from England to Northern Ireland in March, just days before making his senior debut against Switzerland at Windsor Park.
Northern Ireland defender keen to sign new deal at Football League club