Osborne Clarke‘s former head of Nordic Per Troen has been rejoined by partner Paul Corren to launch corporate finance boutique Corren Troen. Corren left Osborne Clarke for Holman Fenwick & Willan, but spent just seven months there before joining the new boutique. Troen set up as a sole practitioner after leaving Osborne Clarke, where he was a partner and head of the firm’s Nordic practice.