John Kanas is losing his top lieutenant at BankUnited (BKU) in Miami Lakes, Fla.

The $12.7 billion-asset company said Tuesday that John Bohlsen has resigned as chief lending officer and vice chairman for personal reasons. Bohlsen agreed to remain a senior advisor to Kanas, BankUnited's chairman, president and chief executive.

Rajinder Singh, BankUnited's chief operating officer, replaced Bohlsen on the company's board.

"We are truly appreciative of [Bohlsen]'s valuable advice over the past four years," Kanas said in the press release. "We will miss having his presence on our board, but are pleased that he has agreed to continue in a senior advisor capacity."

Bohlsen was a top executive with Kanas at North Fork Bancorp and Capital One Financial (COF). The executives agreed to pay to pay $20 million last year to settle charges that they violated noncompete agreements with Capital One by entering New York prematurely. BankUnited has since made an aggressive hiring push in the city by opening new branches and pursuing commercial loans.

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