Multiple sources have confirmed that PEC Zwolle have officially submitted a bid for Billy van Duijl. The offer for the AZ Alkmaar defender had been speculated for a number of weeks, but represents the first concrete bid for the player. While negotiations continue, they are said to be progressing. The transfer remains in progress, and with no other clubs involved, PEC Zwolle look to be negotiating from a comfortable position. This season (25/26) PEC Zwolle have shipped 40 goals in 19 matches - 2.11 a game, which is well above the Eredivisie average. Billy van Duijl would be expected to come in and help tighten things up at the back. Speculation continues to connect PEC Zwolle with Younes Namli while no fresh rumours surround AZ Alkmaar. Need more PEC Zwolle transfer rumours? Stay tuned to PlayerSwitch for live transfer news and rumours from across the world of football.