Manchester United chief Ed Woodward has not shut down talk of selling Old Trafford's naming rights.

United have played at Old Trafford since 1910, however a raft of clubs in English football have sold their stadium's naming rights over the last 20 years.

Woodward would only insist United had not been approached.

"We are not sitting here with an offer, we are ignoring that," he said during a conference call that revealed United's accounts for the first quarter of the year.