Let's just look at recent trades involving first round draft picks. (We'll ignore the Sixers-Nets deal b/c that was so heavily influenced by circumstances beyond need/fit/value.)
The Blazers sent CJ McCollum, who is an All Star caliber player, a sixth man, and filler to the Pelicans for a sixth man, filler, a protected first and a couple second round picks. Basically CJ for the picks and the rest was to make the contract numbers work.
Celtics sent a first, a pick swap, a possible sixth or seventh man, and a Romeo Langford for a sixth man on a favorable deal.
Raptors sent Dragic and a first to the Spurs for a couple borderline contributors and a second in a clear salary dump. Basically the Spurs bought a first round pick.
Cavs sent a protected first and two seconds with the corpse of Rubio to the Pacers for Levert (possible starter/sixth man) and a second.
Hawks got a first for Cam Reddish but had to take Kevin Knox to get it.
Guys with production value comparable to Gordon involved as principal players in these deals are all considerably younger. CJ got the Blazers a first but he's a far superior player to Gordon. Maybe a team like OKC that is awash in draft capital would offer a first for Gordon if they think their young guys are ready to really compete, but they aren't.