They trade down to 5th-8th & take whoever is left of: (Askarov, Sanderson, Drysdale, Raymond).
They get upto an addl. (2) low 2nds (20 & 21) OR later 1st (21) ...+ 2C prospect / LD prospect, depending on how far back.
If SY picks @4, probably a D, so either Drysdale/Sanderson, methinks he picks Sanderson if he doesn't trade down (5th-8th only, no lower), which I think there's 50/50% chance.
Outside slim chance of Askarov, like 5-10%. Raymond 40%. either D 50-55%.
In my trade down scenarios, Cap Casualties (Broeser possibly, some LD, some 2C) exist for serendipitous reasons.