David Jeffrey impressed with desire of new signing
and live on Freeview channel 276
The 20-year-old attacking midfielder joins the Sky Blues from Derry City until January and is highly thought of at the Brandywell.
Jeffrey is hoping Barr can make a similar impact to that of Trai Hume, who was on loan at the club last season.
"We are absolutely delighted to bring Brendan in on loan initially to the end of January.
"We're constantly looking out for those young players seeking more first team football, with Trai the perfect example of that last season.
"We look to help the player in their development and in return we benefit also from the quality that they bring to the side.
"I have to say a big thanks to Ruaidhri Higgins and Derry City and how the agreement was reached, but what was most impressive was the willingness and desire from Brendan to seek and take the opportunity available to him here."
Barr is set to make his debut in tonight's friendly fixture against Ballymoney United.