Arsenal have boosted their transfer budget with the £9.5m sale of Krystian Bielik to Derby.
Derby confirmed the club-record signing of Bielik on a five-year contract on Friday afternoon.
The 21-year-old joined Arsenal in 2015 but featured just twice for the Gunners, his last appearance for them coming in September 2016.
But a string of promising loan spells at Birmingham, Walsall and Charlton has seen his value increase to almost £10m, marking Arsenal’s most expensive sale since that of Olivier Giroud in January 2018.
Bielik believes it “was a good time to leave” Arsenal as “they didn’t see me as the future anymore and the manager had different plans as well”.
“It was sad when I left the training ground but I spent four and a half years at Arsenal. I joined them at 17 so I was only a kid but I leave there as a man,” he told RamsTV, adding that joining Derby was “a big step forward for me in my career”.