He's talking about roughly the last 40 games where our squad has been producing gutless, pedestrian displays. It started during Laudrup's second season, subsided a little for Monk to begin with and then hit with a bang again, and then it pretty much continued throughout the majority of Guidolin's tenure bar a few decent performances.
This squad we've got has been slowly fading for the past 3/4 years and, to rub salt into the wound, we've had a devastatingly poor go of it in the transfer windows, bringing players in with pedigree and skill but unfortunately no bite behind their bark.
Perhaps our luck has just run out. We couldn't go on finding Michu's, Bony's, Gylfi's, Rangel's and Williams' et al. forever. And the fixture list this year, while not the whole problem, may have us cut so far adrift and so bereft of confidence that when we finally have a run of favourable fixtures, we might be mentally down and out already. It's difficult, but somehow, at least when attending matches, us as fans need to keep the faith and keep supporting. Because the players we have can win matches when on song, but we've clearly found out that when backs are up against the wall, our squad gets wobbly knees.