One thing that is new in the statement (that you didn't include in your post) is that Esken say:
"Esken will be submitting a proposal to CGI with a view to reaching a negotiated settlement of the claims and thus a lifting of the claimed acceleration and demand for early repayment."
I would have thought CGI held all the cards so, seeing as they say they have already made proposals to Esken which would resolve the situation, just what can Esken now propose that might be persuasive to CGI?