Borussia Dortmund are keeping tabs on Christian Benteke's situation at Aston Villa.
Villa have slapped a £30 million price-tag on the striker after he demanded a transfer this week.
While Tottenham are favourites, Champions League finalists BVB are considering joining the battle for the Belgium centre-forward.
Benteke would arrive as a long-term replacement for Robert Lewandowski, whose move to Bayern Munich was confirmed by coach Jurgen Klopp this week.