It may well have been tactically leaked to try to start a bidding war - after all, they have to do something to try to get the share price back up and in the absence of any clear plan of action from management beyond a firesale of assets, this may be it.
It's not totally mad though. AF would presumably welcome existing and expanded feeds to CDG. For KL, a bunch of 175s and AMS slots would fit very nicely. For VS, the feeds at LHR and MAN are worth a look. Questions are what then happens to the rest, and given that AF/KL are not having a good time in the UK market, would they (as incoming shareholders to VS) see this as a solution or just making a big problem even bigger?