My aim is to encourage the other Indian footballers and guide them and at the same time win silverware for Quess EastBengal FC," added Acosta, who played in all their three group matches in Russia.
Acosta has 69 international caps to his name and has scored two goals as his signing for the upcoming season will give the red-and-gold a big boost.
At the World Cup, he had eight clearances and recovered the ball 11 times.
Acosta was included in Costa Rica's squad for the 2014 FIFA World Cup and made his debut in the competition during the round of 16 match against Greece as a substitute after the sending off of teammate Oscar Duarte.
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