According to RTÉ (3rd Jan 2020), in an interview with Wirtschaftswoche, MO'L has said he doesn't expect to receive any 737 MAX aircraft before October 2020.
"We were meant to have 58 planes by the summer," Mr O'Leary said in the interview, extracts from which were published today. "That went down to 30, then 20, then ten*and the latest is maybe only five. It's possible we'll only get the first jets in October 2020."
https://www.rte.ie/news/2020/0103/11...yanair-boeing/
JAS