By Mike Collett LONDON, Nov 4 (Reuters) - Tottenham Hotspur boss Andre Villas-Boas has been criticised for allowing France international goalkeeper Hugo Lloris to play on despite briefly losing consciousness against Everton on Sunday. The 26-year-old keeper's head collided with Romelu Lukaku's knee in the 78th minute of their 0-0 Premier League draw at Goodison Park but a spokesman for the brain injury charity Headway said the club showed an "irresponsible and cavalier attitude" to Lloris's health by allowing him to play on. Headway spokesman Luke Griggs said: "When a player - or any individual - suffers a blow to the head that is severe enough for them to lose consciousness, it is vital they urgently seek appropriate medical attention. More...