THOUSAND OAKS, Calif.—Receiver Odell Beckham Jr. agreed to a one-year deal with the Rams on Thursday, choosing Los Angeles and its burgeoning super team over several potential free-agent destinations. The Browns released Beckham on Monday midway through his third season in Cleveland. He cleared waivers Tuesday with no team willing to pick up the $7.25 million he was owed under his last contract, freeing the five-time 1,000-yard wideout to sign with any team. After considering his options, Beckham elected to join NFL yards passing leader Matthew Stafford and coach Sean McVay in the league’s most productive passing offense. The three-time Pro Bowl selection will play alongside NFL receiving leader Cooper Kupp—who has 74 catches for 1,019 yards and 10 TDs, all tops in the league—and starters Robert Woods (556 yards) and second-year pro Van Jefferson (443 yards). One of those three receivers is likely to see less playing time after …