Belgium manager Roberto Martinez has claimed that Bundesliga giants Borussia Dortmund made the signing of the summer when they brought Axel Witsel back to European football.
The Belgian international was plying his trade in China with Tianjin Quanjian before leaving Asia for the Westfalenstadion in a €20m deal this year, and has firmly cemented himself as a regular in Dortmund's first team.
According to his national team manager Martinez, the transfer should be regarded as the best deal of the current season both in terms of cost and quality.
Speaking to Sport Bild, he said: "The best transfer in the world this season is Axel Witsel to Borussia Dortmund.