Ken Rosenthal of FOXSports says that the Seattle Mariners are telling prospective buyers of Cliff Lee that they want young Major League hitters in exchange for Lee. Rosenthal says this could pose a problem for many buyers.

Rosenthal says that teams like the New York Mets would not want to trade away Ike Davis on a short-term rental, nor would the Los Angeles Dodgers give up players such as Matt Kemp or James Loney.

It’s possible that a team could trade a prospect to the Mariners, but they would need to sign Lee to a long-term deal in order to make this happen.

Rosenthal says the same could be said for the Astros and Roy Oswalt. The team wants to have a financial relief of his $31 million contract balance and young prospects in return.

The Arizona Diamondbacks are wanting to deal pitcher Dan Haren, but it’s unlikely the D-backs will trade him to a team in the National League West.