According to Sport.pl, Korona Kielce was one of four Ekstraklasa clubs that competed with Wieczysta Kraków for the signing of Efthymios Koulouris. Wieczysta Kraków was ultimately successful.

Efthymios Koulouris is a 30-year-old Greek forward who previously played for Pogoń Szczecin before moving to Al-Ula in Saudi Arabia. He was recently linked with a return to the Ekstraklasa, with Korona Kielce mentioned as a potential destination. The forward was also associated with PAOK, and there was discussion of interest from representatives of the Qatari league. However, Koulouris is now expected to join Wieczysta Kraków. Koulouris has 18 caps for the Greek national team. According to Transfermarkt, his current market value is €2.80m.