Here we pick out the key ties in Europa League action heading into the sixth and final round of group matches Thursday. Fenerbahce vs. Celtic Group A is still in the balance as Istanbul side Fenerbahce can both be knocked out or top the group when it takes on eliminated Scottish club Celtic in Turkey. Ajax must beat qualified Norwegian club Molde and hope Fenerbahce loses if it wants to snatch the second spot in the pool. Molde comes into matchday six with 10 points and is safely into the knockout stages while Fenerbahce is on eight, Ajax six and Celtic two. Slovan Liberac vs. Marseille The Czech Cup holder knows it must beat former finalists Marseille in Liberec to join Portuguese side Braga as the two qualified clubs from Group F. The Velodrome side can still pinch top spot in the group if it wins in the Czech Republic and Braga loses to already eliminated Groningen but a draw will also take Michel's side through. Sporting Lisbon vs. Besiktas UEFA Cup runner-up in 2005, Sporting Lisbon has given itself a chance to go through after winning in Moscow in the last round against Lokomotiv. A win against Besiktas will take it through to the last 32 while the Turks only need a draw. Lokomotiv is currently second on eight points and one behind Besiktas while Sporting is on seven. The Russian outfit can guarantee its passage with a victory while a draw would also be enough unless Besiktas lose, in which case overall goal difference would determine which of those two teams advances. However, defeat against already eliminated Skenderbeu could seriously damage Lokomotiv's chances. Tottenham vs. Monaco Ligue 1 side Monaco cannot control its own destiny and needs a win at already qualified Tottenham to overtake second-placed Anderlecht which comes into Group J action with a one-point advantage. The Belgian side can still go through with a draw at home to newcomer Qarabag but should the Azerbaijani club win and Monaco not, it will snatch second spot having obtained more points in matches among the three teams in question. "We have a chance of qualifying, but, frankly, it is only a slim one," said Qarabag coach Gurban Gurbanov. "It will be very difficult — we don't have enough experience at this level." Spurs need a point to guarantee top spot at White Hart Lane.
