personally the reason i could believe that the freight part of the business was/is.could be sold is quite simply that Colas dont really have that much work at the moment/anymore...
i mean they lost the daventry-dollands moor to GBRf, they lost the Transfesa (spelling???) train to DBS... the Boston steel train is running with shorter length trains, other than that all they seem to have is the log trains to/from chirk and some steel service running between south wales and dollands moor...
fair enough iv seen suggestions that their staff are (or may be) all part time or casual/as required ... but they have 5x class 66s locos that they are (i assume) leasing yet you rarely see more than 2 of them working at the same time... with the 47s seemingly used constantly on the boston train...
but we shall see, id certainly prefer they were bought out by another FOC rather than go down the toilet with people losing their jobs...