Unlikely. Just better to trade for him now. Especially since to sign him you basically can't have Smart, Thompson, Fournier, Williams, Williams, Horford, and maybe Langford.
Much better to just acquire him centered on a package of Smart, Thompson, Langford, R. Williams, and future picks. Then you get to save Horford,, Fournier, and G. Williams to actually build a real team. You also can then give Beal more years and more money making it far less likely that he would actually leave.