While I can see how that bank account is a can of worms and potentially connected to more than one reason Trump could/should be impeached, I am not aware of/was not able to find any connection between the TikTok deal and that account.

While looking that up, I found this article that does a better job describing why the TikTok deal may be connected to an impeachable offense (the people running the companies that are involved in the purchase have given Trump money in the past).