WR trade help

10 team PPR, all TDs 7, currently 4th in league

My Line up:
QB: Ryan
WR: Dez
WR: Jordy
WR: Alshon (Was Julio )
RB: McCoy
RB: Forte
TE: Reed (Hope he's for real. Just picked him up. Had Daniels)
W/R: Bush

Bench:
WR: Harvin, Randle, Williams, Heyward-Bey
RB: Murray (Finley owner dropped him to pick up Rudolph but didn't drop Finley so I picked him up), Helu, BBrown, MBush

I really want another stud WR. Yeah Harvin might be that guy in a couple weeks, but likely wont be. I really want Mega, Welker, or Green. What would you offer for them?

Mega Owner (9th place):
QB: Vick, Kaep, Pryor
WR: Mega, Antonio Brown, Garçon, LFitz, DMoore, RWoods
RB: Spiller, FJax, DWilliams, Quizz, McGahee
TE: Witten, Olsen


Green owner (6th place):
QB: Stafford, Wilson
WR: Green, Bowe, Austin, Washington, Wright, Gibson
RB: Martin, SJax, Miller, Tolbert, Hillman, Tate
TE: Gonzo

Welker owner (3rd place):
QB: Luck, Tannehill
WR: Welker, AJohnson, Hartline, Michael Floyd, Tate, Royal, LaFell
RB: Foster, Gore, DThomas, PThomas
TE: Clay, Clark