ANDY FARRELL's fitness is again likely to be the topic of conversation tomorrow (Saturday) when Saracens taken on Harlequins in their final pre-season friendly, but Glen Jackson's duel with Andrew Mehrtens could provide a fascinating sub plot.

The New Zealanders are both expected to be named at number ten for their adopted clubs and Jackson is looking forward to pitting his wits against a player who has over 600 Test points to his name.

"I've played against him ten or 12 times and he's a player I've looked up to for a long time," said Jackson. "He's someone who I have really admired.

"He's a great player and, like he's done for the All Blacks for a number of years, he can control a game. It will probably take time for him to get to grips with the way English defences operate and it will be interesting to see how he goes."

Mehrtens began his career at Quins with a bang last weekend, starring in the hugely impressive 41-14 win over newly promoted Bristol, and he is the latest in a long line of decorated All Blacks to head over to the northern hemisphere following in the illustrious footsteps of the likes of Taine Randell, Justin Marshall, Bruce Reihana and Christian Cullen.

"It's great to see another Kiwi over here," said Jackson. "I think it's such a great chance to experience a different part of the world and play rugby.

England is a great competition compared to the likes of Japan, where a lot of Kiwis get offers to play gives us the chance to play very, very competitive rugby and do a bit of travelling.

"He's obviously fitted it well straight away and I'm sure he will have a good time in London."

Saracens will be hoping to give Mehrtens an uncomfortable afternoon on Saturday as they bid to fine tune their preparations ahead of next Saturday's clash with London Wasps at Twickenham.

"Bedford were a good stepping stone but we are only one week away from the game against Wasps and we need to perform well against Harlequins and take some confidence into the first game," added Jackson.