Honestly those two guys (Delap and Pedro) don't have time to waste at all and they can't wait for the season to begin. The new guys Pedro and Delap have so much to offer and the fans can't wait to start cheering for them, they look like the force Chelsea has been lacking for some time now.
When you said Jackson made mistakes and two for that matter, I feel you are making excuses for him to still feel important to the club, no for me because before now Jackson has been the one that cost the Blues so many games, the mistakes are too many that we have lost count and he knows how to misplace the ball in so many ways, he lost that touch of brilliance the season before I think, if you check how he plays he hasn't shown any sign of improvement at all and which ever decision the club takes if is to sell or loan him I think he definitely deserve it.
When I commented earlier, I didn't know AC Milan have tabled a bid for him. I just read about it not too long ago. It seems Chelsea have made up their mind to get rid of him, but I still stand on my initial position that he shouldn't be sold. I'm not a fan of Jackson but I think he's by far better than Nkuku, and they should sell Nkuku instead. It will be a mistake to sell him and keep Nkuku.