West Brom are in talks with Brentford over a return to the club for midfielder Romaine Sawyers.
It is understood the Midlands club have made an opening bid of more than £2.2m but it has been rejected.
The Bees value Sawyers at more than £3m and Scottish champions Celtic also remain keen after having a £2m bid knocked back earlier this month.
Brentford want to keep Sawyers after he had arguably his best season at the club last term. He had been of interest to West Brom and Aston Villa both last summer and in January.
The 27-year-old made 46 appearances in all competitions and recorded seven assists last term.
He was brought to Griffin Park by Dean Smith - now manager at Premier League Villa - in 2016 and has scored eight Championship goals in 127 appearances for the club.
Meanwhile, West Brom have had a £1.5m bid accepted by QPR for defender Darnell Furlong.
Follow the Summer Transfer Window on Sky Sports
Sky Sports News is home to three new shows dedicated to bringing you the very latest news from this summer's transfer market.
Start your day with Good Morning Transfers at 9am as our team of reporters and pundits bring you the latest news and insight. Transfer Talk then follows at midday, delivering the biggest stories that matter to you. And join us at 7pm for the definitive round-up of the day's news with The Transfer Show.