I can see SAS being very unhappy today.
The deal itself gave SMB a lump of money and a very much reduced price for the BD stake itself. The way the deal is structured (according to press reports) Lufthansa paid a price for the actual shares which gives BD a less than £100 million value.
Lufthansa wins BMI sale battle with £115m to spare - Business News, Business - The Independent
As BD wasn't a publicly traded share, any future purchase would be negotiated on the basis of that last trade in shares which would value their 20% at less than £20 million. It remails to see if SAS get involved here with their lawyers screaming that the deal has damaged their shareholding value, unless they are a 'sleeping partner' on the deal.