In 2006 Croatia officially declared its intention to purchase 12 modern multi-role fighters sometimes before 2010. Older MiG-21s will be retired sometime before 2011 although they were overhauled to serve until 2013.
The two most talked about replacements for MiG-21s are second-hand F-16s (Block 40+) or new SAAB Gripens as a more desired option.
Ca vaut ce que ça vaut, ça sort de chez Wikipedia…