It would be nice to have an upgrade at your QB spot but I agree with Whale on this one in holding on to Graham. In a 10-team league it is crucial to have elite players and Graham is the clear-cut top TE in the league.
Hold on to him and hopefully there will be another way to secure an upgrade on your QB position in the near future.
13 team Roto keeper league 12 F, 6D, 2G, G,A,+/-, PIMS, Hits, TOI(D), GAA, SV%, (Forwards are forwards, no distinction between L,R,C)
F) Ovechkin, Stamkos, Kunitz, Parise, Byfuglien, Backstrom, Little, Gaudreau, Hudler, Brassard, Girgensons, Nelson
D) S. Weber, Phaneuf, Subban, Carlson, Josi, Vatanen
G) Rask, Jones