Cardiff Council has abandoned plans to set up partnerships in social care and planning services because they would not deliver savings fast enough.
The local authority had begun the procurement process after signing a similar deal with Tata Consulting for strategic technology services.
However, officers had come to the conclusion that the proposals to find a built environment partner and a social infrastructure partner were too complex to be delivered quickly.
Chief executive Jon House, left, said: “Firstly, the changes under European procurement legislation were making that kind of contract more challenging. Secondly, and most importantly, there is an issue of time.”
Instead of looking for an external partner, the council intends to increase skills in-house and bring in some expertise.
Mr House is also currently talking to staff about the need to reduce workforce costs by 15%.