Chip Kelly doesn’t generally answer hypothetical questions. Not usually. But before Sunday’s training camp practice at the NovaCare Complex, he indulged one reporter who wondered what might happen if another team inquired about Mark Sanchez’s availability. The question: “What happens if somebody calls you and says ‘we’re interested in Mark?’” “What are you giving me?” Kelly replied. The head coach continued: “I mean, we’ll listen to anything for anybody. We’re not just going to put our head in the sand and say no. It better be a pretty good deal in terms of what it is. But that’s not in any of our thought process.” Kelly added that the Eagles need Sanchez because of how he’s played so far in practice and preseason games, and because they believe he can function in the offense if pressed into regular season duty should something happen to Nick Foles. The head coach also underscored his often repeated preference for having two quarterbacks with experience as starters in the NFL. It should also be noted that Kelly said the Eagles haven’t been contacted by anybody about Sanchez.