I think much is going to depend on how quickly Vitoria finds his feet this season and whether or not he turns out to be the talented coach that LFV clearly thinks he is. Because while I repeat again, that this is likely the least strongest squad we've had in some years, there is still enough quality in the squad to be able to win this league. A lot of people are writing off the squad but I still think we have the best midfielder/winger in the league (Gaitan), the best forward (Jonas), certainly the best first choice central defence duo and one of the two best keepers in the league. So we still have enough quality to retain our title, but it's all going to depend very much on Vitoria's abilities as coach and to create a togetherness and unity within the squad.
I too am pleased that Djuricic remained with the squad. We are really lacking a number 10 influence in the team, a dynamic AM who can start attacks from central positions. Djuricic should be given a chance to show what he can do in that position. With Talisca and Taarabt also in the squad, I think Pizzi should be reverted back to the wings, his natural position, and he can provide cover on either flank. Clearly though the sooner Salvio recovers from injury the better, to walk straight into that right wing position.
As for full back, it's an issue for sure. In all honesty, despite his shaky start last season, I was pleased with Eliseu in the second half of last season. He's got pace and mobility, a goal threat with his shots, and had improved defensively. If he can get that level from the second half of last season back then we'd be ok with him there. The problem is we only have 4 full backs in the squad and Silvio is very injury prone. If he gets injured again then we'd only have 3 options for full back. I think in the January transfer window we definitely have to get another full back in for cover.