Ian Holloway was the manager who got Crystal Palace promoted to the Premier League four years ago.

And the boss will certainly have one eye on his recruitment plans for this summer.

Holloway, who is planning on a scouting trip this weekend in the Football League on the back of the international break, will be assessing which areas of the pitch need improving for next season.

There seems to be a feel-good factor back at Loftus Road in recent weeks, with five wins out of the last seven matches.

Players are impressing from the start and off the substitutes' bench, so it's a wonderful headache for the manager.

Digital Football Writer for Trinity Mirror South East, Mark Ritson, is currently covering QPR for Get West London and was previously Crystal Palace reporter for our sister title Croydon Advertiser for five years. He still covers them from time to time alongside the new club writer, so he's in a very good position to give the lowdown on potential signings.

Below, he has given us five players from Selhurst Park who would be good enough for Rangers next season, on loan and permanently.

Sullay Kaikai - LOAN

The winger has been building his career gradually, taking League Two and League One by storm with previous loan spells.

Kaikai was at Brentford earlier this season until he was recalled after a shortage of numbers at Palace in January.

He made his first team debut in the League One Cup in September 2014 against Newcastle United and even scored in that game.

Kaikai had to wait a year and a half to make his Premier League debut, which came last May on the last day of the season at Southampton.

Coming on at half-time, he did very well and was Palace's best player.

Now, the club have continued his regular development this season in the Championship with Brentford. Of course, he'll be looking for a first team squad place next season.

But if Palace think it's worth having one more campaign in the Championship, QPR would do well to get him. He played in their FA Cup third round games with Bolton Wanderers in January.

Kaikai can play on either wing or just behind a lone striker if needed. He's quick, direct and has an eye for goal from range. He's also a very good free-kick taker.

Sullay Kaikai might be sent out to the Championship on loan again next season

Mathiu Flamini - PERMANENT

The former Arsenal man is surplus to requirements at Palace, having signed a one-year deal last September. He currently has four players in front of him in the central midfield pecking order.

Flamini is 33 but comes with a wealth of experience, having been with the Gunners and AC Milan for the majority of his career.

He would be a very good signing for the Championship and certainly has the bite in the middle to cope. His experience in holding the midfield was used by Palace earlier this season, but he's out of favour now.

Flamini is likely to be released this June. If Ian Holloway can tempt him to stay in London, he could be a shrewd acqusition.

Mathieu Flamini during his Arsenal days

Chung-yong Lee - PERMANENT

The South Korean international has had a frustrating two years at Palace. He's been in and out of the side for the majority and hasn't been able to hold down a regular place.

Lee has not been involved in Palace's first team squad for the last several weeks and is believed to be considering his options this summer, despite having another year to go on his current deal.

Of course, that means Rangers would have to stump up a fee. Lee was linked with deadline day moves in the Premier League in January, but a host of Championship clubs also made enquiries.

Lee knows he needs to be playing regularly to keep his place in the South Korea squad, but moving down to the Championship wouldn't be a bad move, having been with Bolton Wanderers previously.

His best position is in behind a lone striker, or as a playmaker in behind a front two, but Palace and Bolton used him largely out wide.

He'll run and work hard all day long, but he just hasn't been able to show his true quality at Palace. His best moment for the club came against Stoke City in December 2015, firing home a dramatic winner from 25 yards out.

A very honest player and nice guy off the pitch.

Lee Chung-Yong

Frazier Campbell - PERMANENT

The striker has struggled to make a big impact at Palace and has been used similarly to Chung-yong Lee, off the bench for the large majority.

Campbell is a good runner off the ball and brings others into play, while he has chipped in with the odd goal here and there.

The Championship is arguably his level and he would score regularly, for sure. QPR would be silly not to take a look at him this summer.

Furthermore, he would be available on a free, with his three-year contract at Palace expiring this June.

Fraizer Campbell

Zeki Fryers - PERMANENT

The left-back's contract runs out this summer, so he would be available on a free.

Fryers started out at Manchester United and then moved to Tottenham, before he came to Palace in 2014. It has been largely frustrating for him with injuries and a drop in confidence.

However, that changed last summer when previous manager Alan Pardew brought him back to life a bit and all of a sudden he was back in the first team squad picture.

Fryers like to get forward and has an excellent delivery into the box. Now, he finds himself as the club's third choice left-back and is very much on his way out this summer.

He'll be getting quite a few offers from Championship clubs, no doubt. A humble and pleasant guy off the pitch, too.

You can follow Mark's work on Twitter at @MarkRitson_TM