Elias joins the Premier League club on a five-year contract, their sixth signing in the summer transfer window.
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Read the full article on Al Jazeera →Study finds that catching up on sleep at weekends is linked to a lower risk of hypertension.
Greece signs $3.5bn deal with Israel to acquire its first multi-layered air defence network by 2029.
Piracy is surging back off Somalia's coast, though not yet at the scale of its 2011 peak.
Which players will Man United, Man City, Arsenal, Real Madrid and Barcelona sign and for how much? Al Jazeera explains.