Michael Bradley has announced a 27-man squad ahead of his side's Magners League clash with Ulster at Ravenhill on Friday, kick-off 6.30pm.
The Samoan brothers Ray Ofisa and Ofisa Treviranus are both due to be fitness tested later in the week to determine their involvement.
Their chances are estimated at 50-50 of making the final 22.
Galwegians trio Joe Merrigan, Peter Durcan and Ronan Loughneyare also included in the squad.
Connacht Squad:
A Browne, L Casserly, M Deane, G Duffy, A Dunne, P Durcan, A Farley, A Flavin, J Fogarty, D Gannon, R Loughney, K Matthews, B McGovern, C McPhillips, J Merrigan, R Morris, M Mostyn, J Muldoon, T Nathan, J O'Connor, R Ofisa, C Rigney, D Riordan, R Shaw, O Treviranus, B Wilkinson, D Yapp.
