Well the whole premise of the article seems to be to take a dig at van Gaal who had absolutely nothing to do with the deal. van Gaal didn't sign Kellett, Warren Joyce did and said so in an interview after the signing and talked about where he first saw Kellett and how he was impressed by him for Bolton's u21s.
The article says about a one year loan spell which was cut short which isn't true. We signed him in January so does this writer think we signed him on a January to January loan deal? Of course we didn't.
Strangest transfer in PL history. Well no because it was an u21s signing, not a PL signing. In fact, he had already played for two clubs that season so I'm not sure if he'd have even been eligible to play for our first team.
The signing wasn't strange anyway. We loaned Saidy Janko to Bolton and thus needed a FB replacement so Joyce insisted we get Kellett in return. He then played a key role for the u21s leading to another u21s league title.