While it would be possible that Poole could return before the end of the season, dont look for it to happen. Since its unlikely that we will be playing in the postseason, what sense would it make to waste a roster spot in hopes Poole could return for the last few games of the regular season? Also...when there is little likelyhood of a playoff appearance, why would you rush Poole back into service, risking further injury?
The smart move (if it is indeed an ACL tear), is to put Poole on IR, let him have the full year to rehab, and have him return in '06 when we very well may be SB contenders. In the mean time, fill his roster spot with a short term fix at CB until Daniels is ready and/or Poole returns.