[...Sigh, he wasn't getting out of this. Eggman was right, of course, and Tails hated to admit that. However...]
He's right, Sonic. Those dimensional portals are one-way, and there's no telling where the next one will lead. And no guarantees that you'll ever find another one on the other side. While we might be able to find a portal without his help... and I hate to say it... we need to try to work together.
[To be fair, Tails could easily keep an eye on Eggman by reverse-engineering the network, but... that wasn't his style.]
Just keep your end of the bargain, Eggman. We haven't forgotten the last time we had to help you out of a mess and you used it to your advantage.
[Private]
He's right, Sonic. Those dimensional portals are one-way, and there's no telling where the next one will lead. And no guarantees that you'll ever find another one on the other side. While we might be able to find a portal without his help... and I hate to say it... we need to try to work together.
[To be fair, Tails could easily keep an eye on Eggman by reverse-engineering the network, but... that wasn't his style.]
Just keep your end of the bargain, Eggman. We haven't forgotten the last time we had to help you out of a mess and you used it to your advantage.