One of the strangest transfers in recent years was that of Takuma Asano.
The Japanese forward joined Arsenal from Sanfrecce Hiroshima in the summer of 2016, but was not eligible for a work permit so joined VfB Stuttgart on loan.
He spent one season there, and the loan deal was extended in last season after they were promoted into the Bundesliga, thus giving him top flight experience.
However, in terms of his development, it has been something of a struggle. The 23 year old made just 15 appearances in the top division, scoring only one goal, far from the kind of form that might win him a place in the Arsenal squad next season.
The move was confirmed by Hannover president, Martin Kind, who said, “We will loan him for one season. The sporting management have given a positive assessment of him.”