Steve Gilbert just confirmed the Clippard trade, and simultaneously gave us the first mention of a return.
Campos (who is called Jose Campos on most sites, no word on which name he prefers) is a right-handed starting pitcher, who was originally signed by the Mariners, and was dealt to the Yankees in the same trade that sent Michael Pineda to New York in 2012. He underwent Tommy John surgery in 2014, missing the entire season, and made it back midway through 2015. Last year, he struggled in Tampa (High-A ball) and started at the same level this year. He was much better, being promoted to AA Trenton after two starts, and then being promoted to AAA Scranton/Wilkes-Barre for his most recent outing, tossing five innings of one-run ball against Buffalo. On the year, across the three levels, he has gone 9-3 with a 3.20 ERA and a 1.36 WHIP in 20 starts.
There's a scouting report on him here. Seems he is related to Kelvim and Alcides Escobar. He was on the 40-man roster, so there's a very good chance we'll see Campos in Arizona before long, if he doesn't come straight here.