After a quiet January transfer window, things are expected to pick up for a number of big clubs in the Premier League this summer. Arsenal, who came so close to winning the title, are keen to bolster their frontline over the next few months and have been linked with the likes of Newcastle star Alexander Isak. Still, the Sweden international may prove too expensive, with Bologna’s Joshua Zirkzee said to be another target.Chelsea, meanwhile, are soon expected to appoint Leicester boss Enzo Maresca as their new manager and could reportedly follow that up by making a fresh move for Crystal Palace star Michael Olise.