AC Milan Defender De Winter Declines Belgium Call-Up, Faces Warnings

• Koni De Winter, a defender for AC Milan, declined a call-up to the Belgium national team.
• Belgium coach Mark van Bommel warned De Winter that his decision will have long-term consequences.
• De Winter is not included in Belgium's squad for the upcoming Nations League games against Turkey.
• The warning from Van Bommel highlights the potential impact on De Winter's international career.
• Sources include Goal.com and Yahoo Sports.