Opec + is expected to agree another modest increase in its oil output target on Sunday, three people familiar with the matter said, as the producers' alliance slows its efforts to regain market share amid rising concerns about a supply glut. Since April, Opec + has raised its output target by more than 2.70 million barrels a day, or about 2.5 per cent of global supply. But in October and November, the alliance reversed its previous months of sharp output increases as markets predicted the risk o...