By Jude Summerfield Barcelona will hope to secure second place in La Liga when they entertain Rayo Vallecano in their penultimate game of the 2023/24 La Liga season on Sunday. It’s been another term of whirlwind drama for Barca, with speculation once again mounting over the future of manager Xavi after a campaign with no silverware and back-and-forth jibes with club officials. Vallecano, meanwhile, managed to end a three-game winless streak last time out but have not scored in any of their last five away league matches. Here’s 90min’s preview of Sunday’s upcoming clash. What time does Barcelon…