Both Roy Oswalt and Cliff Lee are available on the trade market, but considering all that’s going on around the Mets these days with Johan Santana, Oswalt is the best fit.
With Santana struggling, and reports he’s lost three to four mph. off his fastball and he’s no longer as elite as he used to be, the Mets must be farsighted about whom they bring in, as they are looking to bolster the front end of the rotation.
Given that, unless there was a chance to sign Lee long term, I believe the proper route would be Oswalt as you are addressing your pitching needs over the next three years for the cost of top prospects, presumably guys like Angel Pagan and Jenrry Mejia.
To surrender your blue chips for answers down the road is one thing. To surrender them for a rental is quite another. This thinking might be different if Santana were Santana, but he’s not, and that must be factored into the equation.