Shinji Kagawa is already repaying the £6.3 million Borussia Dortmund shelled out to bring the Manchester United flop back to the Westfalenstadion after the Bundesliga giants sold more than 5,000 personalised shirts in the 24 hours after his transfer was confirmed.
The Daily Mail cites a report in German newspaper Bild which explains how the Japan international's deadline day return has gone down particularly well with supporters of Jurgen Klopp's side, after thousands of kits featuring the new No.7 flew off the shelves in the club shop following the announcement.
Kagawa enjoys hero status as a firm fan favourite in Dortmund, thanks to his impressive spell with the club between 2010 and 2012. He now rejoins after two frustrating years at Manchester United where he failed to ever really make his presence felt.
Man Utd transfer business
Former Red Devils boss Sir Alex Ferguson paid upwards of £12 million to bring the midfielder to Old Trafford two summers ago, but failed to get the best out of him due to deploying him out of position when picking him in the first-team.
Kagawa's fortunes didn't improve much under the tutelage of Ferguson's successor David Moyes either, and he fell even further down the pecking order following Louis van Gaal's arrival at Manchester United this summer.
Surplus to requirements
The Dutch coach tried to utilise the 25-year-old in a deeper-lying playmaker role, but after proving incapable in the eyes of Van Gaal on the pre-season tour of North America Kagawa was swiftly shipped out of the club before the transfer deadline.
With wages of £70,000-a-week Van Gaal was eager to get Kagawa off Manchester United's wage bill, presumably in a bid to free up funds for deadline day arrivals Daley Blind and Radamel Falcao.
Dortmund have always been open to the idea of bringing the player back to Germany and paid a significantly smaller fee, which is almost 50 per cent less than what Klopp originally sold him to Manchester United for.
Injuries curtailed Kagawa's progression in the Premier League, but in truth he was never really given a fair crack of the whip, and with a significant increase in competition for places following the arrivals of players like Juan Mata, and more recently Ander Herrera and Angel di Maria, his future will be much better served at Dortmund.
Klopp didn't hesitate to offer his former star a four-year contract in the hope of securing his long-term future at Signal Iduna Park and the deal is already paying financial dividends before Kagawa has even kicked a ball. Manchester United might live to regret it.