The Mets and Padres have discussed a possible Justin Upton trade, but talks have since stalled, CBS Sports’ Jon Heyman writes. The Padres asked for one or two top prospects in return, and declined to pay any of the approximately $6MM remaining on Upton’s contract. Heyman had previously reported that Upton was a top priority for the Mets.

The identities of the prospect or prospects the Padres sought are unknown. Heyman notes, however, that the Padres want quality and not quantity in their return for Upton. Upton is currently hitting .248/.326/.420 in his last season before free agency eligibility. The Orioles, Pirates and Astros have also recently been connected to Upton.

The Mets are known to be searching for offense, and they’ve also recently been linked to Gerardo Parra of the Brewers. Heyman also lists Carlos Gomez of the Brewers, Jay Bruce and Marlon Byrd of the Reds and Will Venable of the Padres as possibilities. Yesterday, the Mets traded for Juan Uribe and Kelly Johnson of the Braves to upgrade their infield, and they also recently promoted top prospect Michael Conforto to help their outfield, although GM Sandy Alderson said that the timing of Conforto’s promotion would not affect their strategy at the trade deadline.