Sheffield United are interested in Chelsea icon Mikel John Obi.

The Nigerian midfielder, 32, only joined Middlesbrough in January on a free transfer from Tianjin TEDA in the Chinese Super League.

But after Boro missed out on promotion he looks unlikely to extend his six-month deal with the Championship club after receiving several offers from the top-flight.

Newly-promoted Norwich City and Sheffield United are two of the sides chasing the veteran.

And Obi Mikel will decide on his next club prior to heading off on international duty next month.

A source told ESPN: “There are some options right now, and a few more we expect to see over the coming days.

“Once all the options are on the table, he will make a decision."