The midfielder, 20, is a product of the famed Southampton academy, and has been at the club since the age of eight.
Since starting his scholarship in 2011, McQueen featured for the Under-18s before moving into the development squad, where the youngster showed a keen eye for goal from the left side of midfield.
The attacking midfielder progressed through the ranks to make his Saints debut in February 2014; coming on as a substitute in a fifth-round FA Cup tie against Sunderland, replacing Adam Lallana.
The development of McQueen impressed Southampton’s coaching staff so much that the player was offered a new four-year deal in June 2014.
The next stage of the player’s development sees him link up with Phil Brown’s Blues at Roots Hall, until the end of the current campaign.
McQueen, speaking exclusively to Blues Player, was thrilled with the move.
“It feels very good to join Southend.” He said.
“I’m excited for what’s to come, and I’m just looking forward to getting started, getting on the pitch and playing some football.”
The player is determined to be a success at Roots Hall, and was very quick to lay down his intentions whilst at the Blues.
“I want to be scoring goals, getting assists and providing that killer ball in the final-third, I want to try and get points for the team, push up and get promotion.”
Southend Manager Phil Brown feels he has a player of real quality who can offer versatility to the attack.
“Sam’s a quality, talented player at the front end of the pitch.” The Blues Boss said.
“He’s got a left-foot that is capable of scoring goals, capable of creating chances.
“If he’s playing on the left-hand side he can put crosses in, if he plays on the right-hand side, he likes to cut inside and hit shots from range.
“He can also play down the middle, who’s got pace, and he’s come from an academy, at Southampton, that has produced a number of quality players over the years.”
Watch Sam’s full interview on Blues Player HD.