Newcastle United have completed a deal with Lille to sign defender Sven Botman for a fee of £32m with a further £2.5m in add-ons.
"I'm really happy, delighted, and I can't wait to start this new adventure," said Botman.
"This is the best day of my life, to sign a contract with Newcastle United. It's a day I've worked hard for."
Botman is Newcastle's third summer signing after they bought Aston Villa left-back Matt Targett for £15m and Burnley's England goalkeeper Nick Pope.
Centre-back Botman, who has been capped by Netherlands at under-21s level, had also attracted interest from AC Milan.