Rangers' signings over the last twelve months have left a lot to be desired. A mixture of average players and former stars who are now well past their prime, it was a confusing summer last year for supporters.

Joey Barton, Niko Krancjar and Philippe Senderos all arrived with much fanfare but little to back it up. None of them had been at their best for years and in the case of Barton, his notorious disruptive personality proved to be too much for the pressure of playing in Glasgow.

This summer a different strategy is needed and it's all about finding players who are still at their peak, or young players who can start to flourish with regular first team football.

A good way of measuring where a player is at is scouring international squads and finding out which players have been deemed to be at a high enough level or in good enough form to play at that high level.

Rangers are on a budget, so they won't exactly be knocking on the door of the Germany camp, but there are players currently on international duty that could do a job for the Light Blues.

Here are four current internationalists that could change the look of Pedro Caixinha's Rangers...

Jonny Hayes

Currently on international duty with the Republic of Ireland, Jonny Hayes is having a fine season at Aberdeen, helping them up to second place in the Scottish Premiership ahead of Rangers.

Scoring sevem goals so far this season, he's already broken his single season goal record at the club since joining in 2012 and looks as exciting and dynamic as he ever has.

Rangers badly need more options in the final third and his wing play, which often drifts inside, is perfect Caixinha's set-up, the Portuguese manager showing a preference for rampaging, overlapping full-backs.

With his contract at Aberdeen not up until 2019, they could face a struggle to land him, but at 29 years of age, the Dons may be tempted to cash in on him while he still holds value.

Ikechi Anya

A player that can hold down a position back to front on the left hand side of the pitch, Ikechi Anya would be an exciting and versatile signing this summer.

On the record as having supported Rangers as a kid, the wide man may find it hard to turn down an offer of playing at Ibrox on a regular basis with his career entering its final stages at the age of 29.

There's still plenty of good years left in him though and he showed on Wednesday for Scotland that he's a smashing player, the only person who got pass marks against Canada.

In and out of the Derby County team this season after a move in last summer's transfer window, if the Rams have plans to replace him at the end of the season then Rangers should certainly be sniffing about.

Christophe Berra

Another Scotland player on international duty this week, Christophe Berra has been almost ever present for Ipswich Town in the Championship this season, performing to a high, consistent standard.

However, his contract is up at the end of the season and at the age of 32, has limited opportunity to sign for a club as big as Rangers are in the latter stages of his career.

We've seen this season at Ibrox through Clint Hill, and in the past with David Weir, that when it comes to central defenders at Ibrox, age is no issue.

In fact, older defenders tend to shine when given the responsibility to play for such a prestigious club and if he can tap into his Ipswich form at the Gers, they'd be getting a definite upgrade on their options currently.

This would be a deal that not only offers great quality, but good value too.

Ben Woodburn

Ben Woodburn received his first call up to the Wales national squad this week at the age of just 17, capping off a whirlwind season for the young striker in which he became Liverpool's youngest ever goalscorer.

His opportunity for first team football at the Reds is limited, as Jurgen Klopp needs to rely on players that can offer more consistency if they're to challenge for the title.

However, his development must progress and a loan move would be ideal for him next season. Why not at Rangers? It would give him the experience of playing in front of a massive crowd ever week, instil a 'must-win' mentality into his game and give him a chance to gain confidence in a league that could allow his ability to flourish.

With the chance of European football also on the table, this could be a move that's to the massive benefit of all parties.