Complex sentence: After the 1924 NFL season, Ailinger swiftly retired (despite an offer to return to the team in 1925), and put the money he earned toward tuition for dental school at the University of Buffalo.
Split into simpler sentences: After the 1924 NFL season, Ailinger swiftly retired despite an offer to return to the team in 1925. Ailinger put his NFL earnings toward tuition for dental school at the University of Buffalo.