I have been looking at this with a fairly strong computer for about 15 minutes (and the judgment of having been a Master for 30+ years and forcing in plausible lines), and I am convinced that this is a positional draw.
White is obviously worse per the computer eval, but he can keep the position exactly as it is by either moving his K from e2 to d3 and back (sometimes f1 if there is a threat to take on g2), or his Rd4 back and forth to d1 if black moves the Re5 away so e4 is not hanging. So, that leaves only to look at what can black do.
You have to look at black's pawn breaks. Clearly, b5 is out as cb actually leaves white better. d5 just loses. f5, which would be the standard try, is never any good because after ef and the bishop trade on f3, that will leave a monster N to go to d5, and that will also keep black tied to the weak pawn on b6. That only leaves the attempt to double rooks on the g-file, and sacrifice on g2, but it is already defended twice, and can even be over-protected with Kf1 if it looks like it might work for black.
Lastly, on top of b6 being weak if f5 gets played, h4 also becomes an immediate target along the fourth rank.
My opinion is that if black tries to win, especially with f5, he is probably going to be worse, and it will be he, who is fighting for the draw. Sorry, I just do not think that there is a way to crack that nut. Try too hard, and you might break an egg though. :)