It's not about how much we are willing to pay, it's about how much we are allowed to pay. To sign another team's free agent, you have to use cap space (or an exception, but no exception is remotely large enough for what Middleton is expected to make). We could have perhaps squeezed Middleton's $30M+ expectation into cap space if we renounced Barnes, and our other free agents, etc. but instead we signed Barnes and brought in Duarte. There's just not remotely enough cap room for us to make a plausible offer.