PHILADELPHIA — Jalen Hurts practiced Wednesday without A.J. Brown on the field. By this time next week, Brown may no longer be Hurts’ teammate.“There’s an ‘if.’ Obviously, been a lingering thing,” Hurts said in his first news conference of the offseason. “But nothing can replace all the greatness that we achieved together.”The reference to an “if” came because the question was phrased with “if A.J. Brown is traded,” which is expected to happen as soon as Monday afternoon when post-June 1 transactions occur. The question continued by asking how such a trade would affect Hurts and the Eagles’ offense. Brown’s departure would be a major change in an offense that is already undergoing a dramatic shift to first-year offensive coordinator Sean Mannion’s new scheme, which means Hurts has entered every season since he enrolled in college with a different play-caller from the start of the previous season. The new scheme took precedence this spring over the clear void of one of the best receivers in the NFL.“For us, we’re focused on learning the offense,” Hurts said. “(Brown’s status) doesn’t really change our approach to change or improve.”The differences were apparent on the field. Hurts took more snaps from under center. There was more use of motion. There were more passes in the middle of the field.It was only one practice — and only one nine-minute press conference cut short by a special teams meeting — so it would be a stretch to read too much into any of the changes. But Hurts is intentional in what he says and how he wants to present his feelings on situations. He left little room for ambiguity and interpretation about the changes on offense and the hiring of the 34-year-old Mannion, a former backup quarterback who has never been an offensive coordinator and has only been a coach for two seasons.“He’s come in, and he’s very clear, giving good direction,” Hurts said. “You can definitely see the vision. Able to answer all my questions. Very instructive. Very helpful. So it’s been a very enjoyable journey so far.”Implicit in almost all of Hurts’ answers was a willingness to adapt to the offense, which has been a question this offseason after reports about rigidness in evolving the scheme and being a big part of the offense’s shortcomings last season. Hurts was not asked directly about the reports, but he offered repeated references to learning and growing.“I think one thing that’s really special about Jalen is just how consistent he is with his approach to getting better every single day, regardless of if we’re calling a concept one thing or if we’re calling a concept another thing or who the play caller is or who his quarterback coach is,” coach Nick Sirianni said. “Just consistency from Jalen with how he approaches a daily process. I always admire that about him.”With Hurts, though, it’s not as simple as following the instructions of a new play caller. Notably, he explained how Mannion offers answers to his questions. Hurts wants to know “why” — and he even said as much when discussing adapting to the heavy use of under-center snaps. Hurts took 14.2 percent of his snaps from under center last season. He’s never taken more than 15.7 percent of his snaps from under center in a season. By comparison, Packers quarterback Jordan Love took 26.8 percent of his offensive snaps from under center. Rams quarterback Matthew Stafford took 42.2 percent of his snaps from under center. Seahawks quarterback Sam Darnold took 36.4 percent of his snaps from center. All three had play callers who influenced Mannion.“You can throw anyone under center, but the question you ask is ‘Why?’” Hurts said. “Why are you doing what you’re doing? Are you complementing? What’s your MO behind what you do? … It’s different from what we’ve done in the past. But generally speaking, in the action game, you’re influencing different people.”