By Sam Mcevoy For Mailonline
Published: 11:33 BST, 16 May 2019 | Updated: 11:37 BST, 16 May 2019
Ajax have playfully mocked PSV's infamous 'If you can't beat them, join them' tweet after winning the 2018-19 Eredivisie title.
Last May, PSV completed the signing of Nick Viergever from Ajax before rubbing their rivals' noses in it after wrapping up the league that season.
Having won three out of the four Eredivisie titles before the current campaign, PSV were confident of their chances of reclaiming the league trophy.