Everton boss Roberto Martinez hopes to be busy in the two months of the summer market.

Martinez is keen for at least four new signings.

"I think we need to bring in three or four new faces - one per unit (goalkeeper, defence, midfield and up front) and make sure we get an extra option or dimension into the squad.

"It is vital to bring the right characters in and whoever steps into the dressing room comes with the possibility of offering something different and extra.

"It is not a matter of bringing in numbers or bringing in players quickly.

"The most important aspect is to try to keep the squad together and get every player ready.

"I have been able to speak with the majority of them and as a manger you can't wait to get to know the players and how they think and where they are physically.

"It is important we have a successful pre-season because it is a time when you can set certain aspects which can help us at the start of the season."