I've grown tired of Ryan Matthews and may be making a rash decision but I have two opportunities to trade him. One GM is willing to trade me Ridley and the other Spiller. Out of the 3, who is going to produce the most down the stretch? (i'm in contention this year). Also, would it be worth it to make this move in a keeper? (ppr)

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12 Team Keeper (1 per position). Start two per forward position, 3 D, 1 Goalie, 1 Util
G=1.5, A=1, PPP/SHP=0.5, W=2, SO=3

C-Giroux, Backstrom
LW-Parise, Tanguay
RW-Ryan (lw), Purcell (lw), Parenteau, Iginla
D-Karlsson, Streit, OEL, Burns, Salo
G-Rask, Smith
Rookie- Galchenyuk, Granlund