Pompey have bought in Mikkel Andersen, Conor Clifford, Paul Connolly and Kevin Long on one-month loan deals. The quartet have arrived from Reading, Chelsea, Leeds and Burnley respectively. All four are eligible to play in this afternoon's League One opener against Bournemouth at Fratton Park. Danish goalkeeper Andersen, 23, has been at the Madejski Stadium since signing from AB in 2007. Blues boss Michael Appleton said: “We’re delighted to get Mikkel. There was a fear we couldn’t do it, but (Reading boss) Brian McDermott has been a different class." Andersen has yet to play for the Royals, but has enjoyed loan spells at Torquay, Rushden & Diamonds, Brentford and Brighton. He also spent 16 months on loan at Bristol Rovers, making 61 appearances. Republic of Ireland under-21 international Clifford, 20, arrived at Stamford Bridge from Crumlin United as a schoolboy and in the last two seasons has enjoyed fruitful loan spells at Plymouth, Notts County and Port Vale. The midfielder said: “I’m really happy to be here. I can see it’s an unbelievable club with great fans and good lads. “I’ve been playing games for the reserves at Chelsea but it’s such a massive squad at the club. So my plan is to come here and play as many games as I can.” Clifford, who appeared in Pompey’s final two pre-season friendlies against Bolton and AFC Wimbledon, has already been a member of Ireland’s senior squad. Defender Connolly – who began his career at Plymouth – has made 68 appearances during his time at Elland Road. The 28-year-old joined Leeds from Derby in the summer of 2010 after playing 72 times for the Rams. Irish defender Long, 22, has yet to make a senior appearance for the Clarets. He arrived at Turf Moor from Cork City in January 2010 and has spent much of the time since on loan at Accrington Stanley and Rochdale. Appleton said: "I find it humbling that these players are prepared to come and play for me and play for Portsmouth." Pompey have received FA and Football League clearance for the 10 players signed on Thursday. However, international clearance has not arrived in time for midfielder Liam Walker to take part against Bournemouth.