"Of course it's hard to understand for people in football that Tottenham didn't sign or sell players, but sometimes in football you need to behave differently", he said.
"I keep saying that I won eight championships and three Premier Leagues but I keep feeling that second last season was one of my biggest achievements in the game".
As such, he is standing by the complaints that soundtracked United's pre-season fixtures.
Time is running out for Manchester United to conclude a deal for Boateng, with Premier League clubs closing their transfer window on Thursday.
"I repeat, pre-season is hard when you don't have your players to work with".
"Newcastle of course in this period have an advantage to us in their preparation with the whole squad, but that is not a reason to complain".More news: Texas A&M grad takes senior photo with alligator
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Any hope with which Manchester United supporters woke up on transfer deadline day has quickly been quashed by Jose Mourinho.
"This target seems unrealistic but if every fan donates just a pound we can help get back to attacking winning ways". Real are desperate for midfield reinforcements after Mateo Kovacic joined Chelsea on loan and they are also facing the prospect of losing Luka Modric to Inter Milan before the month is out.
Speaking to MUTV on the eve of the 2018-19 season getting underway, the Man United manager provided a list of those who will miss the start of the new campaign through injury. I am so proud about them because they were very focused on trying to arrive in a very good condition.
"I am so happy in the way they come back to training on Monday. But we don't believe a lot in the winter market and for sure next season it will be better for him", Mourinho said after beating City to his signature.
For the first time in over 20 years, the Gunners will play under a manager other than Arsene Wenger with Unai Emery taking over in North London.