All predictions of recruitment in early 2021 were based on the assumption that there would not be a resurgence of the pandemic, a second round of lockdowns and travel restrictions and abysmally low demand for flying throughout the winter (because, honestly, why would you go somewhere where everything is closed and a curfew is in place). Many countries on the route network remain off limits to foreigners indefinitely. Even if vaccines are successfully deployed in early 2021 and the acute stage of the public health crisis abates by the summer, never to come back, a return to more than 70-80% of 2019 flight numbers by the end of 2021 is unlikely. And, for now, Wizz air have enough pilots to cover 80% of their 2019 schedule, possibly up to 90% if some of the redundant pilots will be called back. So, late 2021 or early 2022 seems to be the optimistic time line for recruitment now.