The Pistons have “exploratory interest” in big man Jason Collins, according to ESPN. Collins, 34, could provide a veteran defensive post presence in limited minutes: “The Detroit Pistons have expressed exploratory interest in signing free-agent center Jason Collins, according to sources close to the process. Sources stressed to ESPN.com that, while no formal offer has been made, Detroit has opened a dialogue with Collins, who in late April became the first openly gay athlete in North America’s four traditional major sports leagues. [...] One guaranteed contract shy of the league’s limit of 15, Detroit is said to be intrigued by the veteran know-how Collins possesses and views him as a potential insurance signing in support of its two blossoming big men: Greg Monroe and Andre Drummond. Leaguewide interest in the veteran center has nonetheless been somewhat tepid during the first six weeks of NBA free agency, sources said, but that was not wholly unexpected given Collins’ recent play.”