The teams for this weekend's AIB League matches have been announced.

Tommy Bowe and Paul Steinmetz have proved their fitness for Ulster's Heineken Cup tie with Toulouse at Ravenhill on Sunday.

ULSTER have received a massive boost with the return of skipper Simon Best ahead of their Heineken Cup opener against French giants Toulouse at Ravenhill on Saturday.

Ulster 43 Ospreys 7

FORMER Munster second row Trevor Hogan looks set to make his Leinster debut in the Magners League against Edinburgh Gunners at Murrayfield tomorrow night and has been praised by coach Michael Cheika.

MUNSTER may be Heineken Cup champions but they won’t get anything soft in the Celtic League opener against Cardiff Blues at the Arms Park tomorrow night.

NEW Munster rugby signing Tim McGann of Australian provincial side Eastern Suburbs turned down a Super 14 contract with the NSW Waratahs in favour of the Heineken Cup champions.

MUNSTER heroes captain Anthony Foley, half backs Ronan O’Gara and Peter Stringer and second-row partners Paul O’Connell and Donncha O’Callaghan will be at Thomond Park on Saturday, but not on the pitch, as the Heineken Cup champions take on Cardiff Blues (5.30pm).

BRYN CUNNINGHAM will join the list of Ulster centurions when he faces Llanelli Scarlets at Stradey Park this evening.

TWO of Ireland’s senior Triple Crown heroes — Malcolm O’Kelly and Simon Easterby — have been ruled out of Ireland’s summer tour to New Zealand and Australia.

Leicester openside Shane Jennings will captain an Ireland A squad containing only four full internationals at next month’s Churchill Cup.

CONNACHT’S strong record against Welsh sides at the Sportsground this season will be under pressure this evening when they entertain the Neath/Swansea Ospreys (6.30pm).

SPRINT king Andy Maxwell believes the fractured Celtic League season will not get in the way of Ulster's goal of winning the title.

ANDREW TRIMBLE returns to the Ulster line-up for their trip to Glasgow Warriors on Saturday, the only change to the side that defeated the Dragons three weeks ago.

TOMÁS O’LEARY could line out for Munster as outside centre in the Celtic League game with Llanelli at Stradey Park on Saturday.

PAUL BURKE looks certain to start for Munster tomorrow night in a crucial Celtic League game against chasing Ulster at Ravenhill.

ULSTER coach Mark McCall has named a squad of 23 for Friday’s Celtic League top-of-the-table clash with Munster at Ravenhill (7.35 kick-off).

COACH Mark McCall is looking for Ulster to continue their good away form in the Celtic League when they tackle Edinburgh at Murrayfield tonight (ko 7.30).

David Humphreys will play at out-half for Ulster when they take on Edinburgh in the Celtic League tomorrow night.

Leinster 62 Borders 14

Latest team news ahead of this weekend's AIB League action.

The following are teams for this weekends upcoming AIB League action.

Former Waikato scrum-half Isaac Boss has arrived at Ulster to give Kieran Campbell serious competition for his starting position.

Leicester Tigers 50 Munster 19

ULSTER have David Humphreys, Tyrone Howe back for Saturday’s Celtic Cup quarter-final against the Ospreys at St Helen’s.

JASON HOLLAND plays his 100th game for Munster in tomorrow night’s Celtic League tie with Edinburgh at Thomond Park (7.30pm).

LIONS skipper Brian O’Driscoll will partner Gordon D’Arcy at centre in the Leinster team to face Glasgow at Hughenden on Saturday (7.30pm).

The teams for the upcoming AIB League ties have been announced:

FRONT row brothers, Simon and Rory Best have been called into the Ulster panel for Friday’s Celtic League match against Edinburgh at Ravenhill.

Scrum-half Kieran Campbell and wing Andrew Maxwell have been included as the only two changes to Ulster's side for the away game at The Borders this Friday evening.

Adam Larkin and Jonny Bell have been the main Ulster beneficiaries from Ireland’s refusal to release the likes of Kevin Maggs and David Humphreys from their 22-man squad for the forthcoming Autumn Test series.

All Ireland League teams:

INTERNATIONAL wing Tyrone Howe returns to the Ulster squad for Saturday’s clash with Celtic League table-toppers Neath-Swansea Ospreys at Ravenhill.

Coach Mark McCall has left Tyrone Howe on the bench in favour of wings Tommy Bowe and Andrew Maxwell for Ulster's crucial clash with The Neath-Swansea Ospreys at Ravenhill on Saturday.

CONNACHT will welcome back hooker Bernard Jackman for Saturday’s Celtic League clash with Ulster at the Galway Sportsground at 2.30pm.

David Humphreys will reach the milestone 100th cap for Ulster when coach Mark McCall takes the side to Connacht on Sunday in the Celtic League.

Simon Best, more comfortable at tight head, has been released by Eddie O’Sullivan to fill in on the loose head side of a strong front row, also including Rod Moore and Paul Shields, for Ulster’s home tie with Leinster at Ravenhill on Saturday (5.15pm).

DECLAN KIDNEY has selected a solid-looking side for his first competitive match in charge of Leinster.

Former Irish international Mark McCall has made two changes to the Ulster side defeated 30-7 by the Dragons last weekend, for their opening Celtic League fixture against Edinburgh.

Ulster’s Neil McMillan will not be available for Saturday’s pre-season friendly with The Dragons due to a slight knee injury.

LEINSTER coach Declan Kidney has chosen an experimental 37-man squad for pre-season friendlies in England.

Mark McCall has selected a strong Ulster side for their friendly against Harlequins at Ravenhill.

Former Ireland Schools international Andrew Trimble will join Huw Jones in the centre for Ballymena’s Ulster derby with Dungannon in Division One of the AIB League at Eaton Park on Saturday.

Alan Solomons has brought back Neil Doak, Paddy Wallace, Matt Sexton and Gary Longwell as the four changes for Ulster in their Celtic League appointment against the Neath-Swansea Ospreys at Ravenhill on Friday.