The ECB will keep its bond purchases programme going until the end of September and has left the option open to continue buying bonds after that date. ECB president Mario Draghi does not want to commit to an end date of the asset purchases right now, as keeping all options open might help to keep the euro's value in check, Knot said.
"That's why we don't commit to communicating now that it has to be done after September," Knot, who is the Netherlands' member of the ECB's governing council, said. "But I think that's where we're going and that this sentiment is shared within the governing council." Ending the asset purchases would give room to start looking at the possibility of increasing interest rates in 2019, Knot said.