Here's a look at ten hidden gems from the division to watch out for, who have a quality to be potential targets for Sheffield United this summer.
5. Josh Sargent - Werder Bremen
He was capped for his country at the age of just 17, and the United States international striker would be a shrewd signing for any Premier League side looking towards the future. (Photo credit: ROBERT MICHAEL/AFP via Getty Images) Photo: ROBERT MICHAEL
6. Weston McKennie - Schalke 04
Another gem from the States, the box-to-box midfielder boasts supreme stamina and tackling ability. He's also got a mean long throw in the locker, which is always a nice bonus.(Photo by UWE KRAFT/AFP via Getty Images) Photo: UWE KRAFT
7. Robin Koch - Freiburg
The Germany international defender has slipped under the radar for a while, but he's claimed he's eager to move on this summer to further his career. He's likely to cost around £20m. (Photo credit: THOMAS KIENZLE/AFP via Getty Images) Photo: THOMAS KIENZLE
8. Christopher Trimmel - FC Union Berlin
The veteran Austrian is in the twilight of his career, but he's been one of the standout players in the Bundesliga this season thanks to his exceptional set-piece delivery. He'd be a good backup option. (Photo credit: TOBIAS SCHWARZ/AFP via Getty Images) Photo: TOBIAS SCHWARZ