I am not worried at all. We have a strong club, and the addition of 1 or 2 serious players will keep us in play with any of the teams out there with the exception of Barca.
There are at least 40 prospects of similar quality who will not be playing CL next year, any 2 of them will put us in good stead, and I expect we will sign 3 or 4 players.
Off the top of my head: Sanchez, Pastore, Sneidjer, Aguero, Kaka, Honda, Nzobgia, Montolivo, Hamsik, Coentrao, Fabregas, Nasri, Hazzard,, Young, Vertonghen, Modric, Mata, Carzola, Goetze, Neymar, Wiel, Gervihno, Marvin, Dzudczek, Bryan Cruz, Gaitan, Shaqira, Enrique, baines, Vargas, Costa, Perrotti, Martinez, Cahill, Hulk, Rolando, Falcao, Witsel, DeBruynne, Vasquez, Alcantara, Lukaku, Sien and Luuk De Jong, Castanglios, Cissokho, Lucas, Lovren, Pjanic, Zarate, Issiguire, Elia, Phil Jones, Cavani, Lavezzi, Illicic, Bastos, Canales, Arda Turan, Willian, Douglas, Banega, Bale, Bruno Cesar, Iturbe, Ghannasay, Jovetic, Ljajic, Assamoah, Jarvis, Sahko, Kjear, Cheillini etc.
Are all players that can help us. Most of them will not be in Champs league and those that are may still be interested in switching clubs. So no worries here. We first have to deal with our excess weight before we go adding more cargo :)
The list is frankly inxuastible. Sure we wouldn't get all of them, and not even some we really wanted or really should have wanted, but we are a strong team now, and 3 good mix of the above list is sure to improve our overall squad, and it will. We all tend to zero in on our favorites, and mine is unapologetic-ally "Javier Pastore" but a good haul of some of the players on that list or even others I failed to mention, or don't even know yet, will improve us greatly.
I am not worried, just hopeful...
That we get Pastore :P