Marin Cilic has been out of competition since January when he missed the Australian Open and but he's going to make a return soon, though not in Den Bosch.
Cilic missed the Australian Open due to a knee injury and all action since then due to surgery that followed the injury. The Croatian has had a solid few years lately. He hasn't played at his best level for a while and it's likely passed but even so Cilic wants to keep on playing even if his body isn't in the perfect shape anymore:
It's been a few months since he's last played and he'll be making a return on glass though it won't be at the Libema Open in Den Bosch. He initially planned to make a return there but it won't be happening:
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"Hey guys! Quick update: Even though my team and I made the difficult decision to skip @libemaopen next week, I am very close to a return to competitive tennis and eager to play tournaments. My knee has been responding well to a heavy load of training, but we assessed that some extra time will give me better preparation and assurance. The process is long but I am patient in order to be 100% ready."
His update didn't state where he plans to make a return but the next event on his calendar is the Cinch Championship in Queen's Club. He's played there in the past so perhaps the familiarity will make it a great place to come back.