Photo: Everton's Matthew Pennington lies injured

Everton Chairman Bill Kenwright and new manager Ronald Koeman pose

The Everton boss might have another headache to contend with.

Bournemouth's Matt Ritchie in action with Everton's Matthew Pennington

Ronald Koeman's Everton side lost to Real Betis in a pre-season friendly on Saturday.

The Toffees were given a 1-0 lead early in the first half through Aissa Mandi's own goal, before German Pezzela equalised for the Spanish outfit - now under Gus Poyet - on 23 minutes.

The contest stayed like that for the remainder of the match, before Everton lost in a penalty shootout, but the Dutch manager will have been more concerned about something else compared to the defeat itself.

Centre-back Matthew Pennington lasted 78 minutes of the clash, but a hamstring injury saw him limp off in the final quarter.

John Stones replaced him, but the intense speculation over the 22-year-old's future is a major concern for Koeman and Everton supporters.

There is every chance that Stones - linked with a £50 million move to Manchester City - will no longer be a Toffees player by the time their Premier League curtain raiser with Tottenham Hotspur happens in two weeks.

Everton Chairman Bill Kenwright and new manager Ronald Koeman pose

Pennington was certainly a candidate to either replace Stones indefinitely, or supplement his absence while Koeman recruited a more experienced head to line up in Everton's defence, but the 21-year-old's setback has given the ex-Southampton boss another headache at an unenviable time.

The severity of his injury is yet to be determined, but Koeman will be hoping the damage to Pennington - who came to prominence under Roberto Martinez toward the end of last season - will be minimal.

New manager Ronald Koeman during the press conference

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