I think you mean this one: https://www.discogs.com/release/5435466-Billy-Butterfield-And-His-Orchestra-Theyre-Playing-Our-Song
There's only one Evans arrangement: "Singin' the Blues" which is why I bought this. I found it a bit disappointing and probably wouldn't have recognized it as an Evans chart. However it also has a song by Evans: "Again and Again", which I'd never head of and which is terrific. The arrangement is credited to someone else, but Ryan Trusedell of the Gil Evans Project told me he's pretty sure Evans did it. (IIRC he also said they had recorded it but not released it yet.)
Back when I was younger (70 or so) I was able to digitize those 2 cuts so I don't need this Lp, but I no longer have the capabilities to digitize it. If either of you is willing to make a copy for the other, I'm happy to donate it to the cause.
BTW The liner notes to the Lp are very strange. Supposedly a woman "Mary Morse, Rutgers University" writing to her husband who is away for a week. She bought the record and writes about how great Butterfield is, but "his trumpet could never be compared to the power mower you play".