Clubs will take legal action against the Premier League if it introduces financial rules which will cap their spending regardless of how much they earn, the chief executive of the Professional Footballers' Association has warned.

Top-flight teams are set to vote at a meeting on Nov. 21 on whether to introduce top-to-bottom anchoring (TBA), which would cap the amount any club could spend on their squad at five times the smallest central Premier League broadcasting and prize money payout.

Manchester City , Manchester United and Aston Villa are understood to have voted in April last year against further exploration of the idea. Opponents, including the PFA, say TBA creates a salary cap.

The union has enlisted Nick De Marco KC, who successfully saw off EFL plans to bring in a salary

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