After taking the Bundesliga by storm this season, Paco Alcacer is expected to make his loan deal at Borussia Dortmund permanent.

Reports in German media on Friday suggest the Spanish striker has impressed during his short stint at the club who are eager to tie him down long-term.

Barcelona sent Alcacer to Dortmund on a one-year loan deal this summer and following eight goals in just six Bundesliga appearances, he is keen on remaining in Germany.

Bild newspaper and Kicker magazine claim Dortmund have offered the 25-year-old a contract until 2023.

The transfer fee to be paid to Barcelona is speculated to be over €21 million with an extra €5 million in bonuses.

An announcement is expected from the Bundesliga leaders after Saturday’s away trip to Mainz.