Arsenal v Barcelona (Kick-off 7.45pm). Coverage of this evening's last-16 first-leg clash at the Emirates Stadium, where the sides meet in a repeat of last season's quarter-final. The Gunners recovered from 2-0 down to draw 2-2 in the home leg of that tie, but any chances of reaching the last four were ended by Lionel Messi, who found the net four times at the Nou Camp to keep the Catalan giants' hopes of retaining their title alive. Arsenal's talismanic captain Cesc Fabregas is bound to find himself at centre stage following Barca's well-documented pursuit of the Spanish star over the last 18 months, and Arsene Wenger will be hoping for a typically inspired performance from his midfield general. Presented by Bill O'Herlihy, with commentary by George Hamilton and Ronnie Whelan, and analysis by Eamon Dunphy, John Giles and Ray Houghton. There's also coverage on UTV from 7.30pm.