Celtic right-back and Croatian international Josip Juranovic was offered to Chelsea earlier this window, according to a report on CaughtOffside.
The 27 year old right-back was one of the best players at the latest World Cup, dealing with the likes of Kylian Mbappe comfortably.
Chelsea are keen to sign a right-back this month as cover for Reece James and Juranovic is reportedly being considered by Chelsea boss Graham Potter.
Juranovic was part of the Croatian team that finished third in the World Cup and was named in the World Cup team of the tournament.
Celtic reportedly value the right-back at around £17million.