Sky Sports sources understand Kris Boyd is considering an offer from Houston Dynamo, while three English clubs are also interested.

MLS Cup finalists Dynamo are said to have made an approach for the 28-year-old, who is a free agent after leaving Eskisehirspor in December over a pay dispute just five months into his career in Turkey.

But three anonymous English sides also want to sign former Kilmarnock, Rangers, Middlesbrough and Nottingham Forest player Boyd.

Reports have at the same time continued to link the Scot with a return to Rangers, especially with Ally McCoist potentially looking for a long-term replacement for Nikica Jelavic.

Boyd left Ibrox one-and-a-half years ago in order to join Middlesbrough, but his career has dipped since moving away from Scotland.