Phillies manager Pete Mackanin said Tuesday night he'd still like another veteran bat in addition to Howie Kendrick, though he understands the front office is conscious of not blocking young prospects.

The Phillies need offense and the clearest area to upgrade is an outfield corner. But don't expect to see the Phils go after Jose Bautista, Michael Saunders or anyone of that ilk, because those players will require multi-year guarantees and everyday playing time. If you sign one of them, you're basically telling two of Roman Quinn, Nick Williams and Aaron Altherr that they won't be needed much the next three years.

That would be unwise. The whole point of rebuilding is filling a roster with young, inexpensive talent and then eventually supplementing that core with established players who fit. Look at what the Cubs did. Look at what the Astros are doing now, adding older players like Carlos Beltran, Brian McCann, Nori Aoki and Josh Reddick to fill in the holes around Jose Altuve, George Springer, Carlos Correa and Alex Bregman.

For that reason, a player like Seth Smith would be a worthwhile addition for the Phillies.

Smith, 34, makes $7 million in 2017, the final year of his contract with the Mariners. When Mackanin discusses "professional hitters," Smith is the type. He has one of the better batting eyes in baseball, chasing about eight percent fewer pitches outside the strike zone the last three years than the league average.

He's a career .261/.344/.447 hitter who averages 29 doubles, 16 homers, 56 walks and 102 strikeouts per 162 games.

The left-handed Smith can play both outfield corners, and he's always been very effective against right-handed pitching. He has a .272 career batting average with an .827 OPS against righties compared to .202 with a .594 OPS vs. lefties.

Smith is a fit for the Phillies for several reasons. They need more offense from the corner outfield. Logically, that outfielder should be a left-handed hitter because the Phillies' projected middle of the order has four right-handed bats in Maikel Franco, Tommy Joseph, Cameron Rupp and Kendrick.

Furthermore, Smith, unlike Saunders, for example, does not require everyday playing time. Smith shouldn't start against lefties. That would provide opportunities to Altherr and Quinn in 2017, while protecting against ineffectiveness from Altherr and another injury to Quinn.

And lastly, Smith is not going to cost anything meaningful via trade. He's a 34-year-old platoon player in the final year of his deal. The Phillies could likely land him for an insignificant prospect, perhaps a pitcher who had a high strikeout rate last season in the low levels of the minor leagues.

For Seattle, it would be more of a salary dump. The Mariners' 2016 payroll is already $20 million more than it was last year, and per reports, they seem willing to spend to improve their starting rotation.

Smith is not a game-changer, that's not the argument here. He's not J.D. Martinez, a much bigger name and better player. Martinez would also fit the Phillies as a one-year option, and they'd likely be interested in keeping him around longer if they could acquire him. But any trade with the Tigers for Martinez wouldn't be nearly as painless for the Phils as acquiring Smith.

So perhaps more than other available outfielders, Smith would be an offensive upgrade and a player who fits the Phillies' goal of improving without stunting a top prospect's growth.