Complex sentence: Arnesen has since played a key role in bringing Salomon Kalou, Florent Malouda and John Obi Mikel to Chelsea, however the club has still pursued expensive purchases of established international players, rather than unearthing and developing young talent as hoped.
Split into simpler sentences: Arnesen has since played a key role in bringing Salomon Kalou, Florent Malouda and John Obi Mikel to Chelsea. But the club has still pursued expensive purchases of established international players rather than unearthing and developing young talent as hoped.