Borussia Dortmund's new sporting director, Ole Book, is already making moves ahead of the summer transfer window. Appointed in March, Book is reportedly focusing his initial search on two key positions: a dynamic winger and a solid centre-back to bolster the squad for next season's challenges.

According to Sky Germany, the primary winger target is Racing Strasbourg's exciting 21-year-old Belgian international, Diego Moreira. However, the French club's reported asking price of €30-40 million could prove a significant hurdle for Dortmund, known for their shrewd financial management in the transfer market.

This high valuation has the club considering alternative options. Names like Manchester United's Jadon Sancho, whose contract expires this summer, and Viking FK's Edvin Austbö are reportedly on the list as more financially viable targets to add pace and creativity to the flanks.

In defense, the imminent departure of veteran Niklas Süle has made finding a new centre-back a top priority. The radar appears to be pointed toward France once again, with Stade Rennes' Abdelhamid Ait Boudlal emerging as a potential target. Other defenders previously linked include Bournemouth's Marcos Senesi and RB Salzburg's Joane Gadou, indicating a broad search for the right defensive reinforcement.

As the summer window approaches, it's clear Dortmund are laying the groundwork for a strategic rebuild, aiming to blend youthful potential with tactical needs to compete at the highest level.