The former Tottenham star moved to Real this week for a world record fee.
"There's a lot of competition for places - no-one will be guaranteed anything," Englishman Clement told BBC Sport.
"Coach Carlo Ancelotti has a clear idea how to use him but things can change."
"At Southampton, Bale played at left-back which he also did at Spurs where he became a more left-sided player.
"He recently became more central. He's got that versatility.
"It'll be interesting to see how players fit in together. We'll be trying to find their best position and what's best for the team as quickly as possible.
"Gareth has the goalscoring talent and ability to set up goals for others."
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