The Cleveland Indians officially announced on Thursday the signing of outfielder Michael Brantley to a four-year contract with a club option for the 2018 season.

According to reports, the deal over four years is worth $25 million with an $11 million option for a fifth year.

Brantley, 26, has spent his entire five-year major league career with the Indians since being acquired from the Milwaukee Brewers following the 2008 season. He has been a member of the club's opening day lineup over each of the last four seasons since 2010 and owns a career batting average of .277 with 100 doubles, 14 triples, 26 home runs and 212 RBIs in 514 games.

The left-handed hitter is coming off his finest season in 2013, batting a team-best .284 with 66 runs scored, 26 doubles, 10 home runs and 73 RBIs in 151 games.

After shifting over to left field in February, Brantley registered a club-high 11 assists and did not make an error the entire season, carrying a club-record 245-game errorless streak into 2014.

"Michael exemplifies the qualities we look for when bringing people -- not just athletes -- into our organization," said Cleveland Indians general manager Chris Antonetti. "He has a clear vision of the type of player he wants to become and consistently exhibits the tireless work ethic, focus and discipline necessary to achieve his goals and those of our team. In a relatively short period of time, Michael has grown into a selfless leader who sets an example for our younger players."