The tunnel bust-up after the Manchester derby at Old Trafford is sure to increase fans' appetite for a close-up view of any future incidents.
Tunnel clubs, which offer the possibility of seeing such action off the pitch, are in vogue as a premium corporate hospitality opportunity for Premier League clubs.
Manchester City's hugely popular new tunnel club has a one-way glass wall, though if the brawl had happened at the Etihad Stadium in a comparable area, it would have been out of view.
Spurs are advertising a similar club in their new stadium, opening next year, for a whopping £9,500 a season plus a one-off £15,000 membership.