Michael Voller was set upon in a “violent and unprovoked assault” following a FA Cup semi-final clash between the two London clubs at Wembley Stadium on Saturday.
The incident took place outside the Moore Spice Restaurant on Engineers Way at around 7.30pm, with the victim reported to have been identified by a group of Spurs fan walking in the opposite direction.
Voller has been discharged from hospital following treatment, but police say there are still concerns as to possible permanent damage to his eyesight.
Image credit: Metropolitan Police
"One of his friends had a navy blue jacket on," Voller's father Chris told the BBC in an effort to explain why he could have been mistaken for a Blues supporter.
"None of them had Tottenham shirts or colours. They were being quiet, just walking along the road. Perhaps a bit too quiet, if they had been singing Tottenham songs then maybe they wouldn't have been identified.
"I just hope it doesn't put anyone off going to football because it is a spectator sport and it should be. We just need these mindless thugs taken out of the game and locked up."
Detective Constable James Robb, of Brent CID, the investigating officer, said: “This was a violent and unprovoked assault that has left a young man with some terrible injuries that could end up affecting him for the rest of his life.
“This kind of violence has absolutely no place at a football match, and I sincerely hope that those who were with the person responsible do the right thing by Michael, who is a fellow supporter and has supported Tottenham since he was a young boy.
“I’d appeal to all Spurs fans to think hard about whether they have any information about the person who did this.
“I’ve no doubt that there will be several people who know who did this and I would appeal to anyone with information to get in touch with us or to contact Crimestoppers anonymously.”