they aren't telling the truth about this injury
That's fine. One thing for certain, if he could play, he would. Four points after three games, already 5 behind AM, the only reason he is not playing against Valencia is that he cannot.
I expect the team to be quite a bit better with Suarez back. In midfield, when Arthur got on the field last game, he played well enough to force his inclusion in the lineup. He should help.