ISLAMABAD: Filipino professional Manny Pacquiao has appeared to rule out a possible showdown with British boxer of Pakistan-origin Amir Khan in November, this year. Pacquiao, 40, recently became the oldest welterweight champion in history by defeating Thurman in a split decision at the MGM Grand. Khan claimed earlier in the week that he and Pacquiao had both signed up for a fight in Riyadh, Saudi Arabia on November 8. But after clinching the 62nd win of his 71-fight professional career against previously-unbeaten American Thurman, Pacquiao said he did not expect to step back into the ring again this year, www.independent.co.uk. reported.