Callahan Associates, the investment boutique, is hoping to leverage off previous telecoms work as it seeks an auxiliary role in managing the cable TV businesses a private equity consortium has acquired from Deutsche Telekom.

The consortium, in which Apax, Goldman Sachs Capital Partners and Providence Equity are equal partners, acquired Deutsche Telekom's cable TV businesses for up to €2.1bn ($2.3bn) after months of negotiations. It will pay €1.73m in cash by the end of March and up to €375m more later on, depending on the businesses' future value.