Fans have been left surprised by a new rule introduced in this season's FA Cup after Marc Guehi's appearance for Crystal Palace in their third round tie.
The Crystal Palace captain lined up for the holders in their tie against Macclesfield on Saturday lunchtime.
His presence caused concern from fans of Guehi's suitors, such as Liverpool and Man City, over his potential availability in the competition should he move during the transfer window.
Historically, FA Cup rules prevent a player from representing more than one club in the competition.