Porto goalkeeper Diogo Costa is firming as a major target for Manchester City.
A Bola says in the event that Ederson leaves City next summer, Costa is viewed as the top option to replace the Brazil international.
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Ederson is a target for several Saudi Pro League clubs, where a package worth £1m-a-week has been touted for the shot-stopper.
Porto are seeking around €75m to sell Costa - a valuation which City deem as too steep.
Instead, City will seek to do business for around €50m.