Why be satisfied to finish 4th, and face a qualifier, than not just finish top 3 and be guaranteed CL?
Yes, we're 4-5 points behind, but look at Arsenal's form and fixtures in February. They've conceded 7 goals in 2 games, and are looking worn out. And they have the hardest fixtures they've had to come up in recent years approaching them.
Arsenal's spot in the top 3 should be there for the taken, assuming we can continue winning games at Anfield and start "turning up" on the road.