LM Question. Is this Fair?

In the league I am LM in the number one team just traded Dak for Zeke from a team no longer fighting to get in playoffs. The team no longer fighting to get in already has a top 10 quarterback on their roster. Another one of the playoff contenders does not think this is fair and that it’s collusion. What do you guys think? Should I just let it go to a vote between the last remaining teams in the hunt?