Nori Aoki is the newest member of the San Francisco Giants.
The club made it official on Monday after the 33-year old passed his physical.
The deal is reportedly worth $4 million, with a $5.5 million club option for 2016.
"The Aoki signing is not a sexy signing, but it makes them a lot better, and it gives them more depth," Giants broadcaster Duane Kuiper told KNBR 680-AM on Tuesday morning. "I can remember a number of times sitting on the bus with the manager (Bruce Bochy) and him turning around and saying, 'With Pagan out, we need some more depth in center field.'
"And it wasn't that Gregor Blanco isn't a terrific defender. He is. He's talking more about setting the table and getting that leadoff hitter on for the other guys."
The Giants and Blanco reportedly agreed to a two-year contract on Sunday.
The deal, which is reportedly worth $7.5 million, allowed the sides to avoid an arbitration hearing.
Pagan, who is entering the third year of a four-year/$40 million contract he signed after the Giants won the 2012 World Series, missed 91 games in 2013 and 66 games last year.
He underwent back surgery in late September, with an expected rehab process of three months.
Of his 391 career MLB starts, Aoki has hit in the leadoff spot 336 times.
"It really helps with Nori Aoki because if something were to happen to Pagan, then he could slide right into that leadoff spot," Kuiper said.
Aoki is a career .287 hitter with a .353 OBP.