Here's a look at ten hidden gems from the division to watch out for, who have a quality to be potential targets for Newcastle United in this summer’s transfer window.

9. Robin Quaison - Mainz 05
The striker has netted 12 goals for his side this season, including two stunning hat-tricks against Werder Bremen and Hertha Berlin respectively. He's going places, that's for sure. (Photo credit: THOMAS KIENZLE/AFP via Getty Images) | Getty Images Photo: THOMAS KIENZLE

10. Oliver Baumann - Hoffenheim
The Bundesliga stalwart stopper will see his contract expire next summer, and at the age of 29, could be ready for a new challenge after spending his entire career to date in his native Germany. (Photo by Gareth Copley/Getty Images) | Getty Images Photo: Gareth Copley
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