Five intriguing 49ers storylines to watch as stress-free OTAs begin

The 49ers hit the practice field this week in Santa Clara riding the momentum of completing lucrative contract extensions with their three top leaders on the team.In the process, the 49ers again vaulted toward the top of the NFL in cash-over-cap spending with their deals to secure the futures of quarterback Brock Purdy, tight end George Kittle and linebacker Fred Warner.Now, as the 49ers enter the final phase of their offseason program, nearly all of their roster-building and contract efforts are completed. The focus shifts to on-the-field matters during organized team activities.Here are the top five things to watch with the 49ers opening three weeks of practices before the team is excused until the start of training camp in late-July:Purdy-Pearsall connectionWide receiver Deebo Samuel was traded to the Washington Commanders, and Brandon Aiyuk's status remains in question for the early stages of the season. Aiyuk is working out as he returns from surgery to repair a torn ACL in his right knee.The 49ers invested a first-round draft pick a year ago in wide receiver Ricky Pearsall.Purdy will look to build chemistry and a connection with Pearsall, whom the 49ers envision as a player...