Gasol's value has increased, slightly, since we've lost Howard. That's common knowledge. Having Gasol is better than having Ryan Kelly...let's put it that way. It's not even up for debate: Gasol is the best big on our roster.
The mistake? We are likely going to play him and Kaman together, and that means Gasol will once again be slotted at the four. He was not a legitimate PF back in 2011, and he's not one today. His physical abilities have dipped, drastically, since 2008, and that hurts him on both ends of the court when he's playing against the smaller, faster, hybrid forwards...especially on the defensive end.
So, will Gasol be traded before the start of the season? I don't see why we would make a deal, unless we're ripping a team off big time...and for Gasol, it seems unlikely.
Here's the plan: we play out the season, Gasol expires, we use cap to go after big FA's for the next two seasons, and if Pau decides to stay in Los Angeles, he can take a massive pay cut and play limited minutes at the center position...especially if we have a defensive-minded PG coming in, or a defender at the three or four, to make up for what Gasol lacks as an anchor.