PORTSMOUTH are ready to unleash their own foreign predator on Ruud Gullit's European aristocrats at Fratton Park on Sunday. Forget Gianfranco Zola and Gianluca Vialli, for in Mathias Svensson, the Pompey faithful believe they have a Swedish destroyer lying in wait to take the Blues' FA Cup quarter-final scalp. Svensson, 22, has been a sensation for Portsmouth since he was signed for a bargain GBP75,000 from Sweden's part-timers Elfsborg just before Christmas. The 6ft 3in striker has more than repaid Portsmouth manager Terry Fenwick's faith in him with six goals since coming to the south coast. He was also instrumental in ensuring Portsmouth's presence in tomorrow's quarter-final, having scored the second goal against fifth-round opponents Leeds at Elland Road and laying on the winner for Lee Bradshaw in the 3-2 triumph. Manager Terry Fenwick said: 'He could become some player in the English game. We haven't had him here long but from what we have seen there is great potential. We had him on trial for two weeks and liked what we saw and signed him. 'There are some rough edges but we will be able to take care of them. Mathias has really been exceptional since coming here, especially when you remember he came from part-time football in Sweden. 'He has formed a partnership with Lee Bradbury which could become a really potent force for us.' 'If he has a fault at all it is being overly aggressive but we hope to hone that and rein him in a little, although aggression can be a good thing in cup football.' Svensson, a former car salesman in his native Sweden, got his full-time break in football through the former England managerial set-up of Terry Venables, now on the board at Portsmouth, and his old assistant, Ted Buxton. Buxton, now an adviser to the Chinese national team, spotted Svensson in a match against his squad during a Chinese tour of Sweden and alerted his old boss. Venables suggested to Fenwick that a trial might be appropriate and Portsmouth officials contacted Elfsborg - but all was not plain sailing. A club spokesman said: 'At first Elfsborg did not want to deal with us and kept putting off our approaches. We think there may have been some other interest and that they wanted to hold on to their player a little longer. 'We were really going on Ted Buxton's recommendation and if it hadn't been for that we might have dropped the inquiry for Mathias since we hadn't seen him play and had no intention of sending anybody to Sweden to watch him. 'Eventually we got a trial period sorted out and after seeing the potential we decided to buy him. 'At GBP75,000 he does seem to be the bargain of the season, even though he has been booked several times since he joined us at Christmas.' Svensson is also determined to play well against Chelsea to impress his new international colleagues, having been given his first call-up to the Swedish national team which takes on Israel in Tel Aviv on Wednesday. The bustling striker was watched by Sweden's backroom staff in the Leeds match and was included in the current squad after that excellent showing. 'Mathias leaves for Israel on Sunday right after the game - and may miss all the celebrations. 'He is now on a real high after getting his international call-up and admits it would probably not have happened if he had not got a break with Portsmouth,' the club spokesman said. 'Now he is very anxious to do well against Chelsea. 'He even hopes to take a video of the game with him to Israel and, if possible, some newspapers with the result and match report. 'There is an air of confidence about Mathias and the club at the moment. His arrival has changed a few fortunes.' Chelsea, who will be without player-manager Ruud Gullit, who has a hairline ankle fracture, go into Sunday's game after grinding out a 1-1 draw with Blackburn in the Premier League on Wednesday. Per Pedersen opened the scoring at Stamford Bridge with his first goal for Rovers after 62 minutes but Scott Minto levelled with a 35-yard shot a minute later. Gullit is being cautious about his lineup for the precarious tie at Portsmouth but may consider again relegating Mark Hughes to the bench in favour of strike force of Zola, who didn't play against Derby at the weekend due to a groin strain, and Vialli, with the Welshman's fire being held in reserve. Chelsea will also be missing Eddie Newton and Erland Johnsen but there could be a return for Scottish international Craig Burley.