Rayo Vallecano is showing solid play in the Conference League, finishing high in its group. The team is showing consistent results, especially in home matches, where they feel most comfortable.
Lech Poznan is experiencing serious problems in European competition, having lost most of their matches. The Polish club is significantly inferior to the Spanish team and has been inconsistent in away matches.
Given the difference in skill between the teams and Rayo Vallecano's solid performances at home, the Spanish side are the clear favorites in this match.