By Guy Taylor British Airways owner IAG will report its first quarter results on Friday as investor scepticism grows over its latest attempt to purchase Spanish carrier Air Europa. There has been much consolidation in the market following the pandemic, with Lufthansa taking a 41 per cent stake in ITA Airways, and Air France snapping up a 20 per cent stake in Scandinavian carrier SAS. But the IAG, the conglemerate which also owns Iberia, Vueling and Aer Lingus, has faced roadblocks in its €400m (£342.6m) bid for Air Europa, which would see it acquire the remaining 80 per cent of the business it…