We need to surprise them. That surprise element now for me is Jovetic. PL league defenders dont know his movements. He can change games on his own. I actually would play him from the left. Nasri in middle and Navas from right side. in a 4231. Fernandinho/Garcia both deeper role as we really need to concede no more than 1 goal. If we concede two or more it will be neary impossible to win, Pulis teams at home are just not conceding 3-4 goals.
They conceded maybe once or twice 2 or more goals since Pulis at home. Quite a few clean sheets as well for a team like Palace.
And most important? match their desire, menrtality. If they raise their game like its a cup final, well do the same, its a cup final for us too now!!!
(Also lot bigger stake for us than them. If they have better desire, thats unacceptable.)