Richardson was in free agency?
At first the trade looks one-sided on paper with you recieving a top 3 RB and an up-and-coming QB for a top 3 TE and a top 3 QB. But since you also have TE Graham on your roster you traded from a surplus at one position and upgraded another position with the addition of Rice. This trade favors you now.
Why didn't the other owner make an announcement that he made a mistake when he hit the accept button until waiting till now? Unfair or not, the other owner made his own bed and now has to lie in it. But this trade is not unfair on paper. Just leans to one side a little bit . . . . .