A enters in to a development agreement with B and C. A is the Owner of the land and B is the conforming party and C is the develepor. There is the standard "successors and assigns" clause with respect to B and C. Now C assigns development rights to D. via another agreement. A signs on all pages of this agreement, but is not a party to the agreement.
Now A executes nother agreement with only B.
A claims that he has no knowldege ot any agreement between C and D. A argues that the second agreement between A and B is the valid agreement and therfore rejects any interest created in favour of D. Is this stand legally defensible?