Sauerland CEO Chris Meyer claims that the reason they made this decision is because of organisational concerns and potential problems with the TV time. Meyer explained that if the fight took place in London, there was no guarantee that it could be broadcast live in Germany.
This could be the true reason, but it is more much likely that they just didn't want all of the controversy and problems that are surrounding this fight. The fight has attracted a hell of a lot of interest from the fans, positive and negative, but there are some people who do not want this fight to happen. However, many of these people have given up trying now. They have just accepted that this fight is going to happen whether they like it or not.
It unclear now, as to what will be made chief-support on 'Licensed To Thrill' on July 14th. They could bring a big fight in at short notice, but the much more likely solution is that they will boost one of the undercard fights to chief-support and hype it up a lot more than it deserves.