The Marlins need catching help and Toronto is looking to deal Gregg Zaun, but one baseball source said the prospect of Zaun returning to Florida is "unlikely.'' Zaun previously played for the Marlins from 1996 through 1998. Money is one major impediment to a deal. Zaun is still owed about $1.25 million this season, and the Marlins would probably want Toronto to assume a healthy chunk of that total to make the trade happen. The Marlins have also talked to Texas about Gerald Laird and checked out Cincinnati's catching contingent, but they've yet to find the right fit.