The next three matches on January, Rayo Vallecano really must show what they can do to maintain their position in top four. But it seems very difficult to see because some big clubs that will be faced.
Yep. As I stated above, the chance for Rayo Vallecano to stay in the top 4 seems a bit difficult. In January, they will have some difficult matches, against Atletico, Barcelona, and Real Betis. In theory, Rayo Vallecano won't have a chance to gain a single point against them. So, I am not sure Rayo Vallecano to stay in the top 4 anymore after January ends.
The opportunity to play in the UEFA Champions League next season is still wide open for Barcelona,
Not only for Barcelona, Atletico Madrid probably will be back again to UCL zone in the next month. Moreover, if Savic and Gimenez can recover in the next year, or Atletico successfully buys new top central defenders in the next window. When they can deal with their problem in the defense line, Atletico Madrid should be competitive and strong again.