By Jude Summerfield Barcelona will send departing manager Xavi off into the sunset at the conclusion of their clash with Sevilla on Sunday, their final La Liga game of the season. The Blaugrana announced the legendary midfielder’s exit on Friday and have agreed a deal for former Bayern Munich and Germany boss Hansi Flick to take over in the summer. Barca gave up their La Liga title to Real Madrid and exited the Champions League to Paris Saint-Germain in the knockout stages, with Xavi’s subsequent comments about the club’s economic turmoil annoying president Joan Laporta enough to show him the …