Manager was frustrated not to land defensive targets and lost last-day tug of war but can draw on positives as he seeks his first points At least Pierre Sage did his research before joining Crystal Palace in June. Having stepped into Oliver Glasner’s shoes after the most successful era in the club’s history, it has not been the easiest transition for the engaging Frenchman following defeats against Everton and Manchester City to start the new campaign, and amid uncertainty surrounding the futur…