Stewart Downing was at the heart of Aitor Karanka's sacking at Middlesbrough.
"I think I have served my time and this is something I have always wanted to do".
Antonio Valencia's stoppage-time goal secured all the points for Jose Mourinho's side, but Agnew, in his first match in charge since Aitor Karanka departed, believes that Boro were good enough for at least a point.
Harry Redknapp had a short stint in charge of the Jordan national team past year and was also made Derby's football advisor for Darren Wassell's spell as interim manager.
Karanka said: "I'd like to thank Middlesbrough for a wonderful opportunity and the players, staff and all the people at the club who I have worked with".
Staunchly supported by Steve Gibson, Boro's owner who, very much hoping he will prove himself a suitable choice to rescue the team from relegation, has permitted the 51-year-old to hire Joe Jordan as his assistant, Agnew made it clear his is a much more attacking manifesto than his predecessor's. They never recovered from the episode last season that led to Karanka being absent from the touchline for Boro's 2-0 defeat at Charlton. "I couldn't be more proud of the players, the fighting spirit they showed, and the crowd was top-class".
"The players know where we are and what we have to do to get out of the position we are in".
"When we got that goal, we had Manchester United defending in the box for their lives", he added.
It is understood the original intention was to give Karanka the Manchester United game on Sunday to try and get points on the board but chairman Gibson chose to take action more swiftly.
He told the club's website: "I hope he's here this time next year or the year after".
"I did not think it was a amusing situation".
"He's a great guy and he's part of our history", said Gibson. Then we had a very busy summer. "He has progressed us and he will have learned an enormous amount from this experience".