According to JUTARNJI LIST, the Ministry of defense has formally invited the US, Russian, Swedish and French fighter aircraft manufacturers to bid for the projected purchase of 12 aircraft for the Croatian Air Force.
Offers are expected by the end of March 2008. The Ministry is apparently opened to the alternative of procuring used aircraft, too. So, the choice is now among the F-16, JAS 39 Gripen, MiG 29 M2 and Mirage F1.
Offers:
Dassault - Mirage F-1 (second-hand)
Dassault - Mirage 2000-5
EADS - Eurofighter Typhoon
IAI - F-16 (second-hand)
Russia - MiG-29M
SAAB - JAS-39 Gripen
Lockheed-Martin - F-16
In my opinion win Gripen :)