He's going to get paid like a guy who put up 1500 yards and 24TDs over the past two seasons (while missing three games).
But that would be bad value with the Hawks imo. Absolutely need a redzone threat like him but I think a realistic expectation for Thomas in this offense would be something like 500 yards 6-8 TDs.
He's a West Coast guy who went to high school in Cali and college in Portland, I don't doubt that we would be interested in free agency but he'd have to come for less than what he'd get in Oakland. The best TE's stick around a long time, and at 26, he's got at least another couple of contracts in him. If I was him I'd cash in while my stock was at its highest. Oakland probably makes the most sense at this stage.