Town are reported to have made an enquiry to Nottingham Forest regarding winger Barrie McKay.
According to Football Insider, the Blues have made an approach for the 23-year-old, who joined Forest from Rangers last summer for a fee of £500,000.
Forest are said to be open to offers for the Paisley-born wideman, who can also play up front. Earlier this month, the once-capped Scotland international, who is contracted until 2021, was strongly linked with a move to Greek side Olympiacos.
McKay, who had spells on loan at Greenock Morton and Raith Rovers while at Rangers having come through their youth ranks after a spell with Kilmarnock as a schoolboy, made 22 starts and four sub appearances for Forest last season, scoring five times, but was rarely involved after Aitor Karanka took over as boss from his former Ibrox manager Mark Warburton.
Blues boss Paul Hurst, who has cash at his disposal following the sale of Adam Webster, has said adding wingers to his squad is a priority having secured the signing of former Crawley man Jordan Roberts earlier today.