Sky Sports sources understand that Birmingham have made an approach to sign Coventry striker Marlon King.
The Sky Blues announced last week that the 31-year-old hitman, who is out of contract this summer, had verbally agreed fresh terms at the Ricoh Arena.
That statement was swiftly countered by King's advisor Tony Finnigan, who claimed his client was yet to commit his future to any club and was still in talks.
Coventry responded again, with an official club statement making it clear they had a 'double verbal agreement' with the forward who they gave the opportunity to rebuild his career after a spell behind bars.
King has become a man in demand this summer after his exploits in the Championship last term, where he scored 12 goals in 28 appearances.
Birmingham are understood to have held initial discussions with the former Nottingham Forest, Watford and Wigan player, while Leicester have also been credited with an interest.
It now remains to be seen where King will commit his future to ahead of the new campaign getting under way in August.