"I hope he will wear the one I bought for him."

Translation: J'espère qu'il portera celui que je lui ai acheté.

[Penguinair]

Why "celui" and not "celle" if there is no reference to whether the thing purchased was male or female?

[JennyRusse1]

Not sure about this, but I’m wondering if this would come under the agreement with a preceding direct object rule? So changing to celle would require the past participle to be achetée, not acheté?

[Penguinair]

with avoir, acheté does not change. It is always j’ai acheté regardless of M/F

[Jojo553168]

No, because the direct object is placed before the past participle here, so it would be indeed celle que je lui ai achetée.

[Penguinair]

J’apprends quelque chose de nouveau tous les jours !

[Noklip1]

Vous avez raison -J'espère qu'il portera celle que je lui ai achetée - is accepted. Merci.

[DOette]

Also accepted for me j'ai acheté pour lui