Both IVA and Sin Tang are in the same position - it is either accept the cheque or independently make a counter bid. Nothing to be gained for them by blocking the deal without something else on the table.
IVA clearly have been part of negotiations to date and what they proposed was either too complicated or didn't suit EXS or the Xmen for whatever reason.
Sin Tang are still a chance in my mind to trump it - I would say they have had their time to come up with something and it is just a matter of whether they have already declared themselves out of the race or not. Look forward to hearing from them.
In all scenarios there will be a deal.
EXS Price at posting:
68.5¢ Sentiment: Buy Disclosure: Held