Cast & Crew say YES
Here are some quotes from Q&As, interviews and comments on social media.
Tim DeKay, Q&A session, December 15, 2014:
I don't know. That's a good question. I think in past I would've said "No, I don't see that being a possibility," but VERONICA MARS kind of broke the mold with that, so I'm not going to say that would be impossible. I would certainly entertain that possibility, but right now there aren't any plans to have a movie. Gosh, that would be fun.
Matt Bomer, Q&A session, December 15, 2014:
That's way above my pay grade. [laughing] If they came to us with the proposition, then I would definitely want to do it, just to get the chance to work with Tim and Willie and Marsha and Sharif and Tiffani again, but I have no idea.
Jeff Eastin, TVGuide, December 18, 2014:
[...] I think the idea that we come back for something like a TV movie would be appealing and after talking to everybody, especially Matt, I would say that everybody would probably be down for something like that if it came up.
Matt Bomer, People's Choice Awards, January 7, 2015:
I love everyone involved in that show so much that I would do anything with them anytime, and so I hope we get to reunite in some form or another at some point.
(watch the brief clip from the red carpet here)
Treat Williams, Twitter, January 15, 2015:
I've done a lot of television. I think a white collar movie is a cool idea. Whether I'm in it or not.
Willie Garson, Digital Spy, April 26, 2016:
[Creator] Jeff Eastin did a great job, and I can't see why he couldn't come up with a two-hour something. I wish he would. But we haven't heard anything. We've all gone on to other jobs and we talk about, 'Man, this is not what we had over there!' So I would love it.
(Read the full article here)
Willie Garson, Twitter, March 8, 2017:
A White Collar fan tweeted him "Please tell me there's more plans for White Collar? #mozzie"
To that Willie replied: "God I wish I could....."
(see tweets here)