Its actually 4 OTs and the “rush“ seems quite obvious: all Solder, Fleming and Waddle are set to become FAs next year (while Vollmer is gone) . and the OT market as you could see is crazy. Waddle might be gone before September (850.00 savings / 275.000 dead cap) with Garcia a lock. Fleming's 1.8M contract is not guaranteed until week 1 although Id be surprised if he's gone (even on a trade).
Solder will be asking for 10M+ money (11M cap hit this year) and its in the contract that they cannot use FT). There are even hints he might retire.. I like him, but he never came back to the pre-injury form and certainly not to 10M+ player. I think Fleming was better graded against Arizona than Solder in most games. He had a solid season but I wonder how they see it going forward. He suffered in SBLI . look no further then almost costing Pats a game in this last 2- point conversion (that could be an accident of course but it was not the only time it happened):
As mentioned before it might be Dante's last year being fully engaged so they'd probably like to maximise the opportunity..