I think WizzAir pretty much ticks all the boxes for IAG:
- It's a profitable, cash generative airline with a low cost base and no legacy issues
- It would significantly improve IAG coverage of Central & Eastern Europe with little geographic overlap with existing IAG airlines
- Strong brand with a high market share in CEE
- Lots of scope to improve profitability through IAG group synergies
- It would give IAG a much bigger presence at another London airport
Strong brands that "own" a particular market with lots of potential for growth are exactly what IAG is looking for.