LOS ANGELES (

TheStreet

) --

AIG's

(AIG) - Get Report

International Lease Finance unit could see its CEO Steven Udvar-Hazy quit as early as this week, a report says.

The aircraft-leasing company is likely to appoint John Plueger, its current president and chief operating officer, to succeed Udvar-Hazy, a source told the

Wall Street Journal

.

Udvar-Hazy recently was in discussions to purchase about $4 billion in planes from the leasing firm. That plan, which had backing from private-equity firms Greenbriar Equity Group and Onex Partners, was rejected, according to the

Journal's

sources.

Udvar-Hazy was succeeded last month as chairman of ILFC by Douglas Steenland, an AIG board member and the former president and CEO of

Northwest Airlines

. That change wasn't announced by AIG or ILFC, the

Journal

notes.

AIG has put ILFC, one of the two biggest aircraft-leasing companies in the world, on sale for the past year deeming the firm a non-core business.