Pacquiao's answer is "I'm just doing my Job". "My job is in the ring" "It's the job of my promoter Bob Arum to make the negotiations".

This says nothing about who Pacquiao wants to fight. But Pacquiao has also stated he can fight anyone, 147 and below. (It includes Mayweather). He is being safe with his answer. He's opened his mouth too soon in some instances before (example with Mosley) and you can see it when he's asked that he obviously learned that although tempting it is better to leave the negotiating up to his promoter.