The transfer window has slammed shut with Premier League sides shelling out a record £835million in fees over the summer with all managers busily readying their squads for the long season ahead. Some signings have caused raised eyebrows and others have been viewed less favorably and here, Easyodds.com football tipster Tom Powell takes a look at some of the best deals done this summer…

#5 Sadio Mane

Club: Southampton
Fee: £10m
Position: Attacking Midfielder
Best Bet: Southampton Top Half Finish @ 13/8 – BET NOW

This was a deadline day deal that slipped under the radar somewhat but the capture of Salzburg’s Senegalese attacker looks to be a decent bit of business by Ronald Koeman.

One or two Premier League clubs were rumoured to be interested in Mane last summer but the 22 year-old remained in Austria for another season and carried on his superb goalscoring form and joins Southampton having netted 33 goals in the last two seasons.

Having lost Adam Lallana and Rickie Lambert to Liverpool plus being without the injured Jay Rodriguez for a significant amount of time Koeman needed goalscorers in his squad and in Mane he has snapped up a player very much capable of chipping in on that front.

#4 Carlos Sanchez

Club: Aston Villa
Fee: £4.7m
Position: Defensive Midfielder
Best Bet: Aston Villa Top Midlands Club @ 9/4 – BET NOW

Villa have started the season in good form having picked up seven points from a possible nine and that’s without fully utilising the talent of new signing Carlos Sanchez who they snapped up from Elche.

The Colombian defensive midfielder played an understated role in Colombia’s decent run at the 2014 World Cup and also played a key role in helping Elche escape relegation from La Liga last term. Villa needed to strengthen their defensive options having leaked 61 goals last season and the man dubbed La Roca (The Rock) will go some way to improve that part of their team, in fact he’s already made two substitute appearances to help Villa pick up four points against Newcastle and Hull.

Villa may still be lacking in terms of an attacking centre midfielder but they are well set defensively after the astute signing of Carlos Sanchez.

#3 Mohamed Diame

Club: Hull
Fee: £3.2m
Position: Midfield
Best Bet: Hull Top Half Finish @ 10/3 – BET NOW

Some of the fees that have been paid for players this summer have been outlandish but for £3.2m Hull have snapped up an extremely reliable Premier League player who is in his prime and he could be exactly what they need.

Diame has been a Premier League player for five years now racking up 167 appearances for Wigan and West Ham and while his performances often go under the radar he will prove to be a solid signing for Steve Bruce.

Hull were one of the busier clubs on deadline day as they snapped up four players including Gaston Ramirez and Hatem Ben Arfa on loan plus Abel Hernandez from Palermo so they look to have a decent balance of attack and defence though for the money Diame is by far their best bit of business this summer.

#2 Eric Dier

Club: Tottenham
Fee: £4m
Position: Defender
Best Bet: Tottenham To Finish Above Everton @ 1.44 – BET NOW

Eric Dier has quickly established himself as part of Mauricio Pochettino’s back four at White Hart Lane and if his first three performances are any indication of his prowess then Spurs have made a superb signing for such a small fee.

Dier made just 26 league appearances for Sporting Lisbon before making his move to North London but two goals – including a last gasp winner on the opening day against West Ham – and two clean sheets suggest he is ready for the big time.

In fact, he has already earned himself a call up to the England Under 21 squad and I don’t imagine it’ll be too long before he turns out for the full national side.

#1 Diego Costa

Club: Chelsea
Fee: £32m
Position: Striker
Best Bet: Chelsea To Win The Premier League @ 9/10 – BET NOW

Chelsea kicked off the season as 19/10 favourites to lift the Premier League title but are already into a best price 9/10 after a superb start to the season and much has been down to the form of Diego Costa.

There was some doubt as to whether the Spaniard would hit the ground running but three goals in four matches suggests he is ready for Chelsea’s title push. His goalscoring credentials are unquestionable though having racked up 43 goals in 94 appearances for Atletico Madrid including 27 in 35 last season.

Some may baulk at the £32m fee but the ‘Ronald Koeman barometer’ suggests he is only worth two and a half Shane Longs…therefore £32m is a bargain!

For all the best Premier League odds for the 2014/15 campaign visit our dedicated centre where all match and outright betting is available.