Zaha made another match-winning contribution to Palace's promotion cause in the Championship playoff final against Watford at Wembley, drawing a foul from Marco Cassetti, which allowed Kevin Phillips to fire the Eagles back to the Premier League from the penalty spot.
Holloway admits his club's top-flight status might make a deal more feasible, but he insists he is not going to get his hopes up.
"[Moyes] would be silly to give me [Zaha] back," Holloway said. "Now we are up, it might be realistic. But who knows."
Holloway insists he will battle to keep his squad intact ahead of the new season but concedes he will be unable to prevent interest from high-profile clubs.
"The big wigs get the good players all the time, that's what happens," Holloway said. "We'll try to fight to keep as many of these as we can, and add to [the squad]. But tonight I don't really care.
"I'm delighted for Wilfried, he's got us to the Premier League with a wonderful bit of skill, and Kevin Phillips stuck it in the net, what more can I say?"
Zaha, meanwhile, took the time to revel in the realization of his dream to bring Palace back to the Premier League after an eight-year absence.
"I'm speechless, I'm exhausted and speechless," Zaha told Sky Sports. "It's a dream come true, it's all I wanted - to leave Crystal Palace as a Premier League side. It's all I wanted.
"I told myself I'm giving it all I can, 100 percent, 200 percent, all I want to do is help out the team. I'm glad we actually made it."