Date of birth
Young prospect Hayden Muller - a regular for The Lions' Under 23s side - made his first-team debut during a 4-1 win over Huddersfield Town on the final day of the 2019/20 campaign.
Muller, adept at centre-back or right-back, captained Millwall's Under 18s side to a memorable FA Youth Cup run in 2019/20, culminating in a Quarter-Final against Chelsea at Stamford Bridge.
The defender has featured on numerous occasions for Gary Rowett's side, including in a Carabao Cup tie against Premier League outfit Burnley in 2020/21.
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