Chelsea v Barcelona (Kick-off 7.45pm). Tommy Martin presents coverage of the last-16 first-leg encounter at Stamford Bridge, as the Blues welcome the La Liga leaders. The sides last met in the semi-finals of the 2011/12 campaign, when a 1-0 win here followed by a 2-2 draw at the Nou Camp saw the Londoners prevail en route to lifting the trophy for the first time in their history. With analysis from Neil Lennon, Kevin Kilbane and Brian Kerr.