Most likely, the UK will look to enter into a new arrangement with the EU member states so that reciprocity in some form will remain.

最有可能的情况是，英国希望与欧盟成员国达成新的安排，以某种形式保留互惠。

youdao

For DBS to get full control, Indonesian regulators said, Singapore would have to allow more Indonesian banks to open branches in the city-state, in what they called a "reciprocity" arrangement.

WSJ: DBS Group Extends Deadline on Takeover of Bank Danamon