The rear of a modern boot is designed to lock the foot in place, but that structure can rub against the Achilles or press into the heel. Repeated friction creates hot spots, blisters and discomfort, especially when a player wears a tight-fitting boot for improved touch.
Cutting away part of the heel counter leaves the sock exposed and reduces direct contact with the most sensitive area. It is an improvised adjustment rather than a fashion statement, although the report says the practice has occasionally been mistaken for one.
One possible explanation is Haglund’s heel, sometimes called “pump bump”, where a bony prominence develops at the back of the heel. A stiff shoe can irritate the surrounding tissue and place extra pressure near the Achilles and bursa.
That does not mean every player with a cut boot has the condition. The simpler explanation may be a poor fit, a narrow heel shape or a boot that becomes uncomfortable after repeated training and matches. Players may manage the problem away from games with open-backed footwear, ice or protective gel sleeves, but those options are harder to use during 90 minutes.
Roberto Firmino and Philippe Coutinho have also been seen with similar alterations. Their examples underline a wider issue: even expensive boots can require individual modification when comfort and performance collide.
Manufacturers continue to chase lighter materials and closer-fitting designs. Those changes can improve control, but a boot that feels precise may also leave less room for sensitive areas around the heel.
The next time a player takes to the pitch with a deliberate opening in the back of the boot, the explanation is likely to be comfort rather than style. The detail will remain a small but revealing test of whether football equipment is designed for real feet.