Southampton boss Ronald Koeman feels he can help on-loan Chelsea fullback Ryan Bertrand reach his potential.
The former Ajax and Barcelona defender said Bertrand now needs regular football to reach his potential.
"We spoke about the possibilities after (Luke) Shaw went to United because we needed a player in that position," said Koeman.
"If you are a Chelsea player that means you have good quality but he missed playing regular games.
"I like him as a player because he's an offensive left full-back.
"He has shown his qualities from the first day, but I expected this kind of quality.
"All he needed was to play every weekend, and now he's doing that it makes him stronger and more confident."
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