Everton are set to be busy in the summer transfer window.
The Dutchman was confirmed as the new Everton manager last week after he completed a move from Southampton.
He was reportedly lured to Goodison Park by the offer of a big transfer budget to overhaul the squad this summer.
According to the Mirror, Koeman is looking to add at least four new faces to the group he inherited from Roberto Martinez.
The report claims that he is looking to bring in one or two central midfielders, a winger and a striker to the squad this summer.
One of those midfielders is likely to be a long-term replacement for Gareth Barry, who at 35 is coming to the end of his career.
Much is likely to rest on the number of departures from Goodison Park this summer with John Stones and Romelu Lukaku in particular linked with big money exits, as reported by The Express.
Should they both leave, Koeman is likely to target even more signings to make up for the loss, but a stay for both would likely change his plans in what is gearing up to be a busy first summer for him.