Vigneault, hired April 15, spent Friday teaching players drills and installing his system and style of play, lessons Konecny will have to play catch-up with.
"Doesn't help, and it certainly doesn't help him," Fletcher said. "He's a good player, can help our team. But for now ... it's no different than you get an injury during the season and you don't have a player."
Defenseman
Ivan Provorov
, who was a restricted free agent prior to signing a six-year, $40.5 million contract (average annual value of $6.75 million) on Friday, said he and his teammates would help Konecny get up to speed whenever he arrives.
"We'll help him as much as we can to get him back to his game and make him feel comfortable," Provorov said. "If he has any questions about the new systems, the new coaches and us as players, we'll help him."
Konecny is expected to play in the top six for the Flyers this season, possibly at right wing on the top line with center Sean Couturier and left wing Claude Giroux. For the first practice of training camp, rookie Joel Farabee, the No. 14 pick of the 2018 NHL Draft, skated in that spot.
"We believe we have good depth," Fletcher said. "We like our depth and there's opportunity now for other players to step up and show what they can do. We'd rather Travis was here, but he's not, so we just have to move on without him and hopefully at some point he gets in."