I'm afraid Chelsea couldn't start the friendly matches well. 
First a draw against Wrexham and now a huge defeat by Celtic, 4-1. Maresca is new around here of course but hopefully he manages to find the right system for the team soon.
Because there isn't a long time period left for the season to start officially. Pochettino was sacked for no reason and now they have to experience the same process again. Enzo Maresca will need to adapt to the team to make things better. The worst case scenario would be his not being able to meet the expectations at all. In that case, I presume that Boehly would regret sacking Pochettino while things were getting better actually.
First a draw against Wrexham and now a huge defeat by Celtic, 4-1. Maresca is new around here of course but hopefully he manages to find the right system for the team soon.Because there isn't a long time period left for the season to start officially. Pochettino was sacked for no reason and now they have to experience the same process again. Enzo Maresca will need to adapt to the team to make things better. The worst case scenario would be his not being able to meet the expectations at all. In that case, I presume that Boehly would regret sacking Pochettino while things were getting better actually.
Losing in friendly matches is not a big problem because after all, it would be dangerous if Enzo Maresca forced his players to play optimally because this would also be dangerous for injury. Therefore, I don't think it's a problem about Chelsea not getting good results in friendly matches because after all, friendly matches are just to get players or teams back to fitness.
Because for me, friendly matches are not about winning results, because with friendly matches at least the coach will have his own assessment for each player in his squad. Therefore, instead of aiming for victory just in friendly matches that have risks about injury, then I think it is enough to play appropriately and not to overpower.