Ryanair only fly the 737 Type Rating, so the A320neo wasn't a viable option for them.
vs
"On 8 September 2014, Ryanair made a commitment to order 100 new Boeing 737 MAX 8s (plus options for an additional 100) for delivery from 2019.[75]"
The only non-737 Type Rated aircraft in the corporate fleet are the A320-200s that came with the aquisition of Lauda Air, which are set to be replaced by 737-8200s.
The A320neo was never a viable option for Ryanair.