https://lopezdoriga.com/deportes/erik-morales-confirma-pelea-contra-marco-antonio-barrera/ According to this spanish Article its for Sept 16 in London.
I heard Lennox Vitali is the AJ Wlad co-main and Naseem Hamed is fighting the winner or Barrera morales but there is at dispute about whether they will fight a cruiserweight or heavyweight.
If Morales Barrera 4 happens at this point then it shouldn't be seen as a serious fight. I don't begrudge them, however and I would be happy enough to watch it. Whatever happened to that exhibition between Duran and Chavez? That should have happened by now.