Who is your favorite player that wasnt suposed to be great but ended up being a legend?

For me its Seku Koita. Signed him for Werder in the first season for 3 mil and now its the beggining of 29/30 season. He is the only player left. Has scorged over 150 goals for the club in the league alone, had a 50+ goal season, has helped me win the conference league, and lifted 2 bundesliga back to back and a super cup at the start of the current season as cp. He is performing on the level of players like Sesko and Hojlund who battle to be his strike partner. I realy wanted to tell his story and hope to see some stories like his.