Ukraine and Lockheed were working on a deal for F-16s about a year ago.
Chris answered the question regarding improv ops for the F-16 - it can operate from highways.
It is necessary to conduct an FOD walk prior to it's taking off, but there are countless stretches of roadway where it can deploy from.
Where the MiG-29 is superior to the F-16, is it can operate from most hard surfaces and it's intake system is designed with that in mind. In other words, it's not confined to maintained airfields or highways.