The contract of Union Berlin striker Taiwo Awoniyi carries a buyout clause.

Signed permanently from Liverpool last summer, Awoniyi is being linked with a return to England.

Newcastle United, West Ham United and Southampton are all in contact with Union Berlin about the Nigeria international's availability.

BILD says the striker's contract carries an affordable €20m escape option.

In 38 games this season, Awoniyi has scored 18 goals.