"Garry will be officially unveiled at a media conference on Monday".
"I don't really want to go into the detail of that right now but it didn't suit me and so I had to take a decision. I've signed for three years but I want to do it in the first year".
Monk has yet to finalise his backroom staff or decide the future of former head coach Steve Agnew and won't meet his players until they report back for pre-season training later this month.
Boro opted against appointing the 51-year-old on a permanent basis and have instead turned to Monk after he impressed with Leeds United in 2016-17.
Democratic Unionists in Northern Ireland become election key
The Times newspaper's front page declared that Britain was "effectively leaderless" and the country "all but ungovernable". At least one senior party member has defended creationism, the theory that the world was created by God 10,000 years ago.
Radrizzani will be aware that his new man needs to be able to build on that progress if the club are to finally return to the Premier League for the first time since 2004.
"It is about looking who is here, assessing them and maybe trying to add to the squad".
Monk believes the 24-year-old will have an important role to play - if he remains at the club.
"Of course, the ambition is to go straight back up". There's no getting away from that.
"I'm ambitious and I want to be working and find that right challenge - that is something I have always wanted", he said. "I've got an opportunity to show myself against and with the best players from our country".