BUFFALO, N.Y. — Lindy Ruff is going to have some decisions to make when the Buffalo Sabres start training camp in the fall.There’s a chance Buffalo’s roster will look different between now and then, but as things stand, the Sabres have 14 forwards (with Peyton Krebs still to sign), seven defensemen and three goalies. There will be competition for roster spots, uncertainty around what the lines look like and a camp battle to replace Bowen Byram’s minutes on the blue line. Alex Tuch and his 19 minutes a night are gone from the forward group, too.“It’s a 23-man roster,” Sabres general manager Jarmo Kekäläinen said last week. “With the players we have right now, it’s going to be a heck of a battle in training camp, and there’s going to be some disappointed players that are probably NHL players but can’t fit on the 23-man roster. That creates another challenge, but I think it’s a good challenge and a great problem to have.”Looking at the Sabres roster as it’s constructed, it’s easy to see another trade happening to loosen the logjam at forward. There are still some questions to sort through. Here’s an early, rough sketch of some forward lines along with some of the questions I’m pondering.Zach Benson — Jiri Kulich — Tage Thompson