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Translations: Gintama 507 (2)
Konoha would want Sasuke back, dead or alive anyways. Aside from Madara(which most people don't even know about), he's the sole user of the fearsome Sharingan. Having such a weapon roaming around wouldn't be in their best interest. We saw how fervently the village was for defending the Byakugan bloodline so I doubt they'd want to risk the Sharingan falling into enemy hands if they could try and stop it.
Same reason the elders didn't want Naruto roaming around basically.