Head coach Pat Lam has made four changes to his Connacht side to face Gloucester in the quarter final of the European Challenge Cup at Kingsholm on Friday night, kick-off 7.45pm.

Ireland international and Six Nations winner Robbie Henshaw returns to the fray and is named at inside centre in a partnership with the competition’s top try scorer Danie Poolman for the trip to the English Premiership outfit.

Tiernan O'Halloran shifts to the right wing to facilitate Zebre-bound Mils Muliaina, who is reinstated at full-back after missing out last week with injury.

Up front, South African Quinn Roux is named in a second row with Aly Muldowney. There's also a reshuffle in the back row as Galway man Andrew Browne, whose new deal for next season was announced this week, starts at blindside flanker.

Captain John Muldoon will wear the number 8 shirt in what will be his sixth Challenge Cup quarter-final.

Replacements JP Cooney, James Connolly and Ian Porter have all been called into the match-day squad while Craig Ronaldson has recovered from the illness that ruled him out late of last week's game to take his place on the bench.

"Playing a quarter final in any competition is massive and to be involved in knock out rugby at this stage of the season is what everyone wants,” said Lam after announcing his team.

"There's no doubt that going into the cauldron that is Kingsholm is a challenge for any team. Top seeds Gloucester are a side with quality internationals and a lot of experience.

"But we have worked hard to get here and with a home semi final up for grabs, we're looking forward to facing that challenge head on as a team."

Connacht:  Muliaina, O'Halloran, Poolman, Henshaw, Healy, Carty, Marmion; Buckley, McCartney, Ah You, Roux, Muldowney, Browne, Masterson, Muldoon.

Replacements: Delahunt, Cooney, Bealham, Kearney, Connolly, Porter, Ronaldson, Leader.