Sorta general, would be better to know if anyone has made any players available.
I would target Malkin. Your centers are weak and Malkin has been absolute dogshit so far so maybe his owner might be disgruntled. He just dropped a -2 (+/-) with zero peripheral stats in a game the Pens won.
Horvat is a better hockey player than he is fantasy player so I'd try to include him, his name value is worth more than his actual stats. Would probably take Gaudreau+Horvat, there seems to be a massive drop-off in value on your roster after Gaudreau. I'd probably still do that though.