The article you referred to (Brownlee - Edmonton Sun) mentions that any delay in the NHL season due to the CBA thing works in Allison's favor, as it gives him more time to recover and see if he can play again. Guess we'll see, but it seems to me that if he is deemed healthy enough to play again that other NHL teams will easily be able to out-bid the Oilers for him. I could see the Oilers matching an overall offer (or pretty close) but it would be more bonus-driven than other teams' offers, as most of them can afford to take the higher financial risk.
However, the team that signs him might have an extra center to part with, then, that the Oilers could try for (a la Langkow/Nedved), perhaps. -sigh-