Banfield Maidana made his professional debut for
Banfield in 2006, and rapidly established himself as a regular first-team player.
Europe In December 2007, the Argentine club reached an agreement with
Spartak Moscow for Maidana's transfer to the Russian side for a $3.5 million fee. On January 16, 2009, he was loaned to
Recreativo Huelva. In the second half of the year, he returned to Spartak but was seriously injured in his very first game after the comeback (a
Russian Cup match against
FC Moscow).
Latin America On December 14, 2010, Maidana was loaned to
Huracán, back in Argentina. In the middle of 2011 he signed with the club
Rangers de Talca of Chile, being together with
Gabriel Roth, star reinforcements for the talquino team which won promotion to the first division. In early 2012, renewed its link with Rangers for the next 2 seasons. On July 19, 2012, the Rangers president, Richard Pini, confirmed his move to
Atlante of Mexico. On July 26, 2012, Jose Antonio Garcia, CEO of Atlante confirmed his arrival at the club. For the 2013–2014 season Maidana returned to Argentina to play for
Argentinos Juniors.
Philadelphia Union Maidana signed with
Major League Soccer club
Philadelphia Union on January 15, 2014. His first goal for the Union was the winning goal in a 2–1 win at Sporting Kansas City on May 14, 2014.
Houston Dynamo On December 7, 2015, Maidana was traded to
Houston Dynamo alongside teammate
Andrew Wenger in exchange for allocation money and the #6 selection in the
2016 MLS SuperDraft. ==International career==