Roofe joined Rangers earlier this week from Anderlecht for an undisclosed fee reported by Derniere Heure as being €5million (£4.5million).
The 27-year-old is back to Britain after a year-long stint in Belgium, prior to which he played alongside Dallas at Leeds.
Roofe scored 32 goals in 122 games for the Elland Road side and was highly rated by Marcelo Bielsa, who told BBC Sport last August that he couldn’t “be happy” to see the attacker leave.
At Anderlecht, Roofe unfortunately saw his campaign hampered by injury, but still managed a respectable seven goals and three assists in 16 appearances in all competitions.
On Tuesday, Rangers confirmed the signing of Roofe on a four-year contract, one of two strikers arriving at Ibrox on the day alongside Cedric Itten.
“Kemar Roofe is a really good guy,” Dallas told the Scottish Sun. “He’s great about the dressing room and is very professional. He’s very hard-working… he just wants to better himself all the time.
“Roofe’s a social guy and very upbeat. That spreads around the dressing room. He’s a very positive guy too. It’s just part of his mentality, he’s a winner. He will never sulk or be all doom and gloom. He’s always striving for more and bettering himself.
“Roofe’s very grounded so all the ingredients are there for him to do well. He’s a great acquisition for Rangers, and I think he’ll be successful there because he knows where the back of the net is.”
In the space of a couple of hours on Tuesday afternoon, Rangers solved their crisis up front by bringing in two high-quality strikers in Roofe and Cedric Itten.
Roofe – who can play on the wing, in attacking midfield and up front – was actually linked with Rangers last summer, though the Glasgow club lost out to the Belgian side in the end, but now they’ve finally got their man.
With Alfredo Morelos’ future at Ibrox in doubt, Roofe is a very welcome addition to Rangers, a versatile, talented player and all-round great guy who has received plenty of plaudits including from his former colleagues.